Nicam,
I felt (almost) that kind of rage about my exH. He was not an A. Then. Because I have regular contact with my (ex) in-laws, I've had reports of his self-destruction through the years. It's sad, it's shocking, and somewhere I think I get a tiny bit of satisfaction out of it. (I also feel I need to work on that a little bit...)
Sit back, relax, and watch him do it to himself. Guys like that do not need our help taking themselves straight to hell. They'll get there on their own.