As you're on this board, I am assuming (please forgive me if I'm wrong) that you have been hoping to get your M back on track at some point? I'm afraid that I don't know your whole story, so apologies if I'm oversimplifying.
It sounds as though you are very angry with your H, and this is totally understandable.
It is also terrible that your H has been in an accident, and apologies here if I sound overly Pollyannish about this, but do you think that there is a chance that this accident might have made him see things differently? From what you say he was friendless before this, and is very grateful for your company. Sounds like you are acting like the bigger person in this situation.
Do you still love your H despite all of the heartless things that he has done to you? Is there a part of you that would like to see where things could go if in fact this has made him see things differently?
I can only imagine the pain that the As must have caused you and your family. Are you willing to give him another chance if he asks for it? What do you think is right for your children in this situation?
I know that it might be difficult to deal with public opinion one way or the other, but it is your decision, your M, and your life, and nobody knows better than you what is right. What is your heart telling you to do?
ITH
Me:34 H:36 M:5 years T: 8 years Bomb: 07/17/08 I want to be separated for 6 months--I don't know what I want the outcome to be S 07/28/08-11/08/08 Living together ~7 months D Possibly busted?!?!!!