This situation is not going to get any better, he is not going to change unless he admits that he has problem(s) starts working a program and gets the mental help he needs to address the anger/abuse issues.
He will not improve just because he is not drinking, he is an abuser.
To me, abusers are toxic and can be dangerous.
Your first responsibility is to your children, growing up in a home with an abuser will affect them in a negative way,not only today, but into adulthood. I know, I was raised in a home like that.
I heard and saw everything, just as all children do. It took me years to get over the effects of my enviorment.
I deserved better and I didn't get it.
You hold the key to your children's well-being in the palm of your hand, use it to open a new door for them!
My Best,
Dolly