I agree, maybe it's time to get mad instead of feeling at his mercy. Not out of control anger, but anger that empowers and galvanizes you to act to take care of yourself and your kids.
I think he's playing the victim (with your friend, e.g.) and also hates himself in a way- that comes through but gets projected onto you as hate of you. Their re-writing of history is just incredible sometimes, as well as the global statements that they make like "you're not my family". Somehow they know the most hurtful things to say to us, don't they? Mine hit me with some choice words the other night-- hit straight to my heart and he knew it. You will always be his family- he made sure of that by being with you all these years and getting you pregnant several times.
I know it's probably not kosher here to some, but I agree you should file on him and protect your assets now, then proceed with locking him out of your and your kids' house- at least until he shows he can be better behaved. Just my 2 cents-- take care of yourself--
When the men on the chessboard Get up and tell you where to go; And you've just had some kind of mushroom And your mind is moving slow; Go ask Alice... I think she'll know.