I think a lot of times alcohol is like the third partner in relationships, and when it gets booted, the dynamics of the relationship can change in HUGE ways...everything has to be reshuffled and resosrted. Sometimes the booze was like a referee and sometimes it was the problem child, and many time a little of both.
I thought getting sober was going to help my marriage...surprise surprise!
Like any big life change, there will be a shakedown. Many people find marital therapy helpful