Hi Readerbaby,
I'm a double winner too. I usually post on the "friends and family" forum. Don't beat yourself up, you are back here. I lost 10.5 months of sobriety in a situation a lot like yours. But without the sewage spill (yuck). My AH is still using although today, of course, he says "no more." Quack.
Hang in there. You have support and resources. You are strong.