The beef was pretty uneventful, was that enough to sour their relationship for good?
Also I agree with the above that it was just the DJ. They stick to playing what's hot. Most artists don't have time or really care to tell their DJ what to play and what not to play... they hired the DJ. The DJ takes pride in his or her picks. Otherwise Nicki could just do the DJing herself. He obviously knows not to play stuff like kim lol.
Um, that would be a stupid hype song before Nicki even came out, to be honest i'm surprised it's not on the set list, it's better then some of the garbage she performed that night and everyone knows the song.