Is his insurance paying for this???
My AH has federal govt. BC/BS and it's darn good coverage, but after three rehabs they said that was the limit. You can't blame a person for trying, but it sounds as if he's abusing the system. He's taking up bed space of someone who may really be serious about recovery.
I'm glad you are filing for divorce. It sounds as if you've been dragged through he** and back with his nonsense!!!