I have to go with the above. There are no guarantee's...ever. Having your focus on him is what caused you so much pain in the first place. Now would be a good time to put it where it belongs...on you.
The first step...I am powerless over alcohol, my life has become unmanagable, is where to begin. We have no power there...we cannot see into the future and we cannot read minds.
You have all of today to do something nice for yourself and allow him to whatever he chooses. Separate journey's, yet side by side.
Hugs,
JT