It's funny, but I see their point a bit. They invited us to their Family Night scrimage, which up to this year had essentially been a glorified autograph session/marketing promotion, and we embarased them by kicking sand in their face.
Is that the Bills fault? No, no way. We had our agenda (send a message about our "D" to the rest of the league) and they had theirs (sell merchandise).
That Sherman's team was unprepared is not our fault. But we were still "invited guests" in his house (unlike a league-scheduled game) and we made him look bad. I doubt we'll get asked back in the future, but hey, **** happens.