The Fatboy gigs managed to go ahead with no trains. I'm sure the club and supporters can figure out a work around for this game. It's not beyond the wit of man.
No they didn't.
Trains ran to the gig for those who wanted to use them - and plenty did. And plenty also left the gig early to catch trains before they ceased stopping at Falmer to pick-up.
Beyond that, there was a full bus service across the City both before and after, as well as a fleet of special buses to ferry people back to town.
Finally, isn't an Albion match-day crowd in excess of the number at a gig?