I'm so sorry FOL. I understand how you feel. But, you do deserve so much better! No excuse for any physical violence for any reason!
May i suggest, "Getting Past Your Breakup" by Susan Elliott. has some good stuff in there with respect to detaching, which you most need.
Once he gets out, you can begin detaching and healing more easily. This guy needs to be as far out of you life as possible if he's threatening you in any way. He really needs is ass kicked.