ok... Sounds like the family is mostly exposed to now. And guided well I might add.
Just tell them you would like them on the side of keeping the famly together rather than tossing a hand grenade into the middle of it...
if you talk about keeping the famly together or tearing it apart it takes off the BLAME... its still THERE, but its less aggressive
If your H can make an honest commitment and the $$ is worth it I would say work and do school part time.. but if your H is giong to be playing these wayward games you can't manage all of that.. its too much...