Originally Posted by
lillamy 
I told them that until such a time as he decided he wanted to get help, go to a doctor, it wasn't safe for us to be around him. I told them it's OK to be sad about that, it's OK to love him and miss him, but that as their mother, I had to put their safety first.
This sounds about perfect to me.
I would also strongly encourage you to get professional help for yourself, Nerdly. You sound very smart, strong and resolved - but this is a lot to carry by yourself, and a good therapist can help you map things out in a way that is healthiest for you and your son.
Best of luck to you in a rotten situation.