I've heard many stories like this.
On a roll to "get their life in order" they seem to have a momentum that they can't STOP changing things, even the good things.
Exah is trying to get sober. I wonder if I had stayed and he had tried, if I would have been curbed.
Sorry about all this...you didn't cause it, can't cure it, can't control it, and can't make him stick out the marriage either.
But you CAN take care of YOU.
Take care of you during this time...you deserve to be treated good by YOU.