chero, have you called a crisis line to see what they can do?
Finding out what you can do is power.
I would go to a womans shelter, call police and tell them he is scarey, then if anything comes up on property, settlements etc. you will be covered that you did not leave the home, you just went to be safe.
Something is holding you back? If it is love only, it will be there, if and when he gets help.
My suggestions only, You have to go with your gut, but get some power under your belt. such as divorce laws, seperation laws, property laws,etc.
At a crisis center you can go to work, have people to talk to after work, can have time to think. Does your state have seperate maintence, I would ask for that until he can find soberity. Make sense? Then he too would have time to think.
Stop the Merry-go-round, stop the dance, stop the games, stop the battle, and chaos.
Caring hugs to you both