im not condoning that behaviour but look:

"That fact that it happened in front of 40,000+ people, at a Clear Channel-sponsored event, while Hyundai Pavilion Security turned a blind eye and let the Osbourne camp pelt one of the main headlining bands with eggs, beer, and spit, was simply inexcusable."

well, it is Ozzfest. its run by the fucking Osbournes. they are going to do whatever the hell they please. without anyones permission. they have money. and they run the goddamn show. as to WHY they asked Iron Maiden to tour with em and then pull a stunt like this, its fucking publicity. good or bad. publicity is publicity. anything to get attention. like a cutter, cutting and showing it off for attention.