Apartment Tenant Trying to Transfer Full Lease to Roommate

[Mike Matern]

I am trying to leave my apartment and transfer full responsibility to my roommate for the lease.  My roommate, a leasing staff member and myself all signed a "Roommate Release Form".  After it was signed, the leasing staff member asked her manager if everything was good and the manager said "No, he isn't off the lease.  You shouldn't have done that." and they refused to give me a copy of the paper.  I feel if all parties have signed this document then I should be free to go.  I went back to the office today to ask to see the paper and they tore it up in front of me.  Seems very sketchy.  Do I have any kind of legal action that I can take since they destroyed a document we all signed?  Should I go back with a lawyer to try to get them to sign another copy of the form?