Not fake. He really did that during his Russian tour in the late ‘80’s. He was pissed that they kept the audience lit during the show instead of giving them the escapist concert experience he was trying to present. The rumors that circulated at the time was that he tossed over the grand piano. If he had Hulk-like strength, he probably would have.
Billy Joel Goes Crazy In Concert!!
If it’s real, it’s unbelievable. If it’s fake, it’s perfect. Win win