Just be extra careful that he isn't spending marital assets or kids' college funds and that he's not running up debts you could be liable for.
He seems to be sticking with his $1000/month he takes out (not including rent).
I think I've been on top of it. I go into our joint CC daily, look at all the investments monthly, and run a credit check on him about every 2 weeks to make sure there are no loans. And I'm the only one that controls the kids college fund. If you think of anything else I should do, please let me know!