Hi Broken,
Welcome to SR and glad you are getting some help for yourself.
Often people come to get help for the addict. Part of the damage done by being with these people is that one forgets themselves.
I would listen to his threats, drunk or sober.
TJP above demonstrates this. The abuse escalates. It can be dangerous. One cannot only concentrate on the sober part. The drunk part is very real and where the harm lies. Even the sober times are no good in these relationships as one cannot relax. The big "blowup" is always just a drink away.
Please consider getting out of this relationship. Please read from here and listen to those who have gone before you. I have not had personal experience of this, but I truly feel so sorry for you and others in this situation. You deserve happiness and to be treated well. Please give yourself that. You have the power, take it back!
:ghug3