Finish What You Start (Drinking With The Devil and Derangement)

Many years ago, in my early twenties, I was very reckless and irresponsible. There is one experience from this era in my life that sticks out in my mind more than many of the other memories of that time. I feel there are multiple morals to this story. Maybe you can decipher what they are or what the story means to you.
One night my best friend, who we treated like family, and I went out with my brother and his wife for thier wedding anniversary. We went to a bar and grill, ate some food, and imbibed copious amounts of liqour. We then decided to pick up some beer and hard liqour from the store and continue this binge at my brother's home.
After a long night of drinking like there was no tomorrow I made the foolish decision of driving home. It didn't seem like a big deal to me at the time because my house was literally down the street and around the corner , and I felt fine. Remember that one's judgment is severely impaired when he's been drinking.
I got into my car and was creeping down the street. I decided I wanted to change the CD that was in my CD player. The CD that I wanted was on the passenger side floor so I had to reach down to get it. As I reached for it my hand tilted the steering wheel to the right and the car steered towards the side of the road. One of my brother's neihbors had decided to park his work truck on the side of the road instead of in his driveway or yard. Needless to say I slammed into that truck at 35 mph. Because I was leaned over, the chest strap of my seat belt didn't hold me back and my head slammed against the dashboard full force.
I felt a numbing blow to my head and saw a white flash. Everything seemed to slow down. I sat up and said "OH....SHIT" then blood spewed out of my nose like a faucet turned all the way on. I got out of my car, checking my body for wounds or broken bones, then started jogging towards my brother's house. My slippers fell off at some point and I was barefoot. I had only made it down the road with my car about 100 yards or so. My right eye was split open. I took off my shirt which was drenched in blood from my nose to stop the bleeding.
I finally got to my brother's house, and he was still drinking. At the time he had a bit of a cocaine abuse problem. He used it so he could drink more for longer. I barged into the house totally confused and scared. I didn't know what to do. My brother saw me and asked "what the hell happened?!?" I told him that I had wrecked the car and I didn't know what to do. He asked where the car was and I told him. He then told me to stay at the house while he went and assessed the damage. Then I suddenly realized I had just left the scene of an accident, which is a crime. I quickly told him "I need to get back to the car!" and he told me no. I began to walk towards the door and my brother stood in my way and said "Sit down NOW!". I tried to walk around him and he grabbed me. I then shook myself loose and went for the door again. He started shoving me really hard and I told him to stop, then I told him that I needed to leave his house to get back to the car. He then tried to shove me really hard. I instinctively went into fight or flight mode and ended up getting him in an arm bar. The technique I used is called "Musso Dori" in Taijutsu. Of course it wasn't the exact technique. It was more of a crude variation of the technique which is what always ends up happening in a real situation.
Once I had him locked up good I could have broken his arm, kneed his head, or choked him out till he was incapacitated. Instead I made the horrible mistake of thinking I could let him go and talk it over with him. I thought to myself "hey we are both adults, we can solve this problem". I forgot to take into account the amount of alcohol, and most importantly, the amount of cocaine in his blood stream. As soon as I let go he went into a blood rage and began pummeling me. I was in such a daze from slamming my head into the dashboard at 30 mph that I could do nothing to stop his barrage of punches. I moved backward until I tripped. He then mounted me and began his assault once again. I turned my head from side to side making him miss and punch the concrete every so often. By this time we had made it out of the house and into the street in front of the house.
Out of nowhere my best friend rushed in and pulled my brother off of me, all the while screaming "What the fuck are you doing?!? What the hell is going on here?!?" I got up and jumped into my best friend's car on the passenger side. My brother then attacked my best friend who had nothing to do with anything. I could hear my brother's wife, also in a drunken coke rage for some reason, screaming and cussing at us. She said something about calling the police. I'm not sure what else went on outside as I was in tears due to confusion, fear, anger, and pain.
Suddenly the car door opens on the driver's side and it is my brother. He sticks his head in and asks "are you ok?" I turn my head and look at him, holding my bloodied T shirt to my eye. He then hits me twice in the eye i'm trying to stop from bleeding. Then he slams the door. About 10 seconds later he opens the door again and punches me in the eye one more time then slams the door once more. Some time passes by, I can hear my best friend screaming and fighting with him. The car door opens a third time, this time it's my friend. He says "we gotta get the hell out of here" as he jumps into the car. Right as he starts the car and shifts it into drive, we see red and blue lights flashing right behind us. The cops pull us out of the car and seperate us. They had a hell of a time trying to figure out what happened.
In the end I was the one who had assault charges pressed on him. My brother told the police that I came in the house threatening to hurt his wife and children (who weren't even there). My brother was so out of it from the cocaine that he started calling people at 6 in the morning bragging about how he beat me and my friend up.
The main two lessons learned from this even are: 1) When you drink alcohol , as far as fighting is concerned, all bets are off. You can't depend on the skills you have to save you, as you are impaired both physically and mentally. If you wish to win a fightwhen drunk it's really about who hits hardest and who hits first. and 2) ALWAYS finish the technique. By finish I mean rendering your opponent incapacitated and unable to do you any harm OR getting away to a safe place. Never think that you can somehow stop a violent altercation right in the middle of it and have a sane and productive conversation. Once the punches fly the time for diplomacy is over, the time for rational thought is over. You have to defeat your opponent without hesitation. This is a concept that I cannot repeat enough times. I believe I have already touched upon the "no hesitation" concept in a previous post.