They thought they'd win the game and they brought a lot of fans. The concourses at the Liberty Bowl are quite narrow, and people were packed shoulder to shoulder. Many of their fans were drunk, loud, and pushing to the point of actually knocking people down. I'm sure some were OK, but rudeness seemed to be the norm for them.
Of course, the LB only had one or two gates open, best I could tell, so they sorta brought it on themselves.