Tenant wants to kick wife out and get her off the lease. Huh?

[Sylvia H.]

Got a strange one guys. I have a tenant who is married. Husband and wife both signed the lease.  Wife is running around and not coming home for weeks at a time. Husband is fed up with her and wants to take her off the lease so he can kick her out. I told him his problem has nothing to do with his lease as she is a legal tenant there. Am I missing something? I can't see how I can change their lease mid way and also what difference it makes since she is a legal resident of the apartment.  Has anyone ever heard of such a thing?  This community is awesome so thanks in advance.