Thanks everybody,
Smoke, I spent some time researching whether or not I'm responsible for his financial mess and I'm ok on the cards he has in his name only. The joint accounts and my individual ones I might have to lock up in my desk at work or something.
I feel like just giving him all the cards that are just in his name back along with the responsiblity for them. I haven't discussed any of this with him yet. I think I'll wait until payday or until he sobers up whichever comes first.
Thanks for the feedback.