I think it's a call. With 11.25BB, you need to be right 1 out ~9 times. Without a read, it's hard to tell what UTG+1 is raising with. He could have raised with JJ, put you on AK with the re-raise and thought you missed the flop. We could also be looking at trips. Then again, if he's real loose, could he raise with QJs or KQs? We could also be looking at AQ or a split with AK. I think with all those possibilities, a call is in order.