klmno, I am so sorry you are not only having such great difficulty with your son, but also getting him the help he needs. I pray that my son doesn't ever get that violent.
Please don't let him get violent with you again, he could seriously hurt you, and then when he is stable, he would have to live with it. I wouldn't want to be in your shoes, but I am afraid that you might not have a choice in calling 911, particularly if it is the only way that he might be able to get help.
Many hugs,
Christy
