I don't know the full situation, but maybe you could talk to him and see which way he would prefer? I mean, I don't know that you can really force him to direct deposit the checks to you anyway... plus he would have access to your account number from the voided check you would have to turn in for the account, which may cause a problem.
Take me with a grain of salt though, because my addict is not a spouse, it's my sister, so I'm fortunate enough to not have to make some of those types of decisions.
*hugs and prayers your way*