brakespear
Doctor Worm
Did he bother you at all? Was he unpleasant and abusive? If not, what difference did it make. He could have been with a couple of Albion (Brighton variety) mates and thought he would show a bit of loyalty to the team he supports.
All in all though it depends on the circumstances. As you say, if he kept a low profile and didn't upset anyone then no harm done and no problem.