This sounds like where I was a few weeks ago with my AH. He was like that for almost three weeks. I thought I was going out of my mind. Finally, he relapsed and drank and the kids and I ended up in a hotel. He entered inpatient rehab last week.
He told me last night that the "dry drunk" stage he was in was just part of relapsing. Some book he was given in rehab explained that the anger and 'dry drunk" period was just a stage prior to getting angrier and leaping to the next stage of grabbing a drink. Sure enough, that is what he did.
I'm sorry you are going through this. It certainly isn't fun. I'm learning that during the "dry drunk" period, all I wanted was for him to be nice. I was craving his attention. Now that he is working at his sobriety, he is craving me and I am the one who is stand offish. Now that things on his end are peaceful, my emotions are getting time to come through and it isn't pretty. Funny how we build up emotions and bury them deep inside. ;(