Akbash Acres

Well, my partner spent one night at Salvation Army, and then forgot their instructions to sign out before leaving, so is banned from using their facilities for some time. So, he came home. He says he is willing to try and work things out with me, but I hear that he has applied to Social Security to get his S.S check sent to him so that he can rent a room somewhere. Do I just let him go, and get a divorce, so that the inevitable $$$ crash does not affect me, or do I go through getting him declared mentally incapable of handling his own affairs, which is true? He couldn't handle budgeting and paying bills BEFORE the brain injury.