he bit me

Max took a serious bite out of me yesterday. I have a pretty nice size bruise with 4 distinct teeth mark places. Luckily he got me through my clothes, so he didn't break the skin. Rhett is no longer taking the dog. I can't say that I blame him. His roommate doesn't want Max. His owners returned from America. He growled and snapped at them. He isn't happy. I just don't know what to do. They don't want him back, so I am stuck with him. What to do???