The band jsut happened to be playing there that night, they had motives, they were fucked in the head and wanted to do it. There's no such thing as no motive.
Nahh Matey, Your Wrong
There Has Been Negative Things About The Place, The Prices The Stage As Well
Ying And Yang....
Things Will Unfold To Prove Otherwise
Remember Also They Are On A Major Label As Well
People will latch on to any little coincidence or detail they can to find a conspiracy. It's a sad and tragic event that happened to take place on the "anniversary" of another sad and tragic event. Maybe Damageplan took notice that they were playing this certain club on the day that John Lennon died however many decades ago