BBJ,

You are a strong woman. There is no reason in the world why you should put up with his recent behaviour (or past behaviour for that matter).... Any parent who would go out drinking instead of helping to take care of a sick child is not worthy of your affection.
I know it does not feel like it (man do I know), but in the long run I have to believe we will be better off. Is this permanent? Who knows....we should take a page out of Kerry's book and move on...the signs are all there....it is very difficult to pull the trigger....good for you for telling him to move out last night.
Again the only drawback to all this is the kids.
I am so sorry you are going through this. I felt my W left me no choice. I believe your H is doing the same.