can you keep him for a few days until you can get a hold of a rescue? If your landlord does find him could you jsut explain the situation? Or maybe he won't be over for a while?Is there a no kill shelter? Can you figure out which neighbor did it and punch them in the face? Or even maybe try placing an ad on craigslist "cringe" i know but there maybe a nice family in your area who would take good care of it.