Hi Mr Muppet - and welcome
I've seen various posts here from people who have a stretch of sober time and then almost inexplicably go back to drinking, very self destructively, so your case is not uncommon.
I know I had to treat the cause of my malaise and I found alcohol was but a symptom.
I tried to fill a void in me with all kinds of stuff...nothing ever came close...
But I had much better results when I tried healing that void.
Maybe thats something to think about?
That's a really big call to make on the back of one post Jeff.
There's a vast mental component to addiction that defies simple categorisation, I think.
If that wasn't true, noone would drink again after the physical withdrawal.
D