Tyler going down: Aerosmith was performing at Toronto’s Air Canada Center on Tuesday when guitarist Joe Perry backed into Steven Tyler as they played “Love in an Elevator,” which sent the frontman off the catwalk and into the crowd. Some say Perry purposely pushed Tyler in anger. After watching the video below, Perry’s actions look more playful than vengeful. But … who knows. The word is that Tyler will be a judge on “American Idol” next season. Maybe that ticked Perry off.