He will still have to move, but if he is in an apartment complex, he should be able to work something out with the rental office in the form of a unit transfer. This is what I had to do when I was stuck in a nasty situation. It allowed me to terminate my lease without penalty. I had to pay a transfer fee and move all my belonging to another apartment, but at least I got rid of the bad room mate and was able to do it all within 30 days.