Now, wait a minute. This picture does not prove that he was being a jerk. It also doesn't prove that he didn't buy 2 seats. It could be that he did, but was assigned seats that weren't together. (Yes, I've had that happen before as well.) It would be in the airline's best interest to allow the larger passenger to remain on the flight and get the other guy on to the next flight. That way this plane technically goes out full (presumably), and then you only have to find 1 seat on the next flight. If the larger person was removed, you'd have to still find 2 seats together to accomodate him.