It took a lot of courage for you to do what you did. I applaud you for that and for recognizing that YOU needed out of that situation.
As far as being friends with him I can only tell you what I think I would do in that situation. He has to want to get help for himself...he can be forced, but in the end unless he wants the help he will end up going back to the way he was. I would ask myself if I really wanted to be apart of that again. And why would I want to be friends with someone who wasn't nice to me even when he was sober? I don't know about you, but I would think twice. Right now I believe you need to make decisions based on what will be best for you as you recover. Just my thoughts.