Welcome back.
I am just curious were you following a plan of some sort to stay sober? Was that one glass your trigger? It would be in my case, I would disappear for a month very often, crazy way to live.
Wishing you the very best, I had a relapse in Nov as I had put the plan on a shelf and my girlfriend was away, working crazy long hours and bang it happened, I have managed to work my plan with some additions and stay sober since Dec 12th but what a terrible experience this last binge was.