This was highlighted in the Fiver as: "Brighton fans! When is it acceptable to leave a football match early? The Guardian Sport Network knows...." - is there a deserved reputation brewing?
Not at all. Barely a mention.
Arsenal have a reputation for emptying early no matter the score (their own fans admit this), and ManU if the result is a near certain loss.
Perhaps its something about stadiums not in city centres, with massive traffic jams and mass transport queues after final whistle.