In my family there are 5 boys and 5 girls, from one mother and two fathers. We're "supposed" to be all adults, not. Brothers and sisters will continue to fight their whole life. Some mental, some physical. My husband tends to let us fight it out among ourselves. With so many people in my family there is constant drama and fighting. I would suggest to let another brother handle him if there is one. My brother and sister had a similar situation, both drunk, both hit, he ended up in jail, she dropped charges, now they get along fine until the next time. If one of my brothers or sisters do something I don't like, I give myself space from them. This way I don't get upset. I don't allow anyone to get me upset if I can, blood or not. Our age ranges from 20 to 43, so you can see how many attitudes I have to deal with and thats not even counting husbands, wives, boyfriends, and girlfriends. My advise to you, do not let him on your property for a while, watch your back, and have no fear of calling the police. Keep a copy of the police report in case you do need them again, the police officer on duty may make a better decision when he see's this report. Don't respond to him at all, including his phone calls. Take a break from all the family for a while.