It happened a few times. I don't know from mind, I'm a little tired, but I do remember a clip on youtube.. I think it was from Hametsu ni Mukatte day 1 or 2.. not really sure.
They didn't do it too often though. Usually during 20th Century Boy.. so search for that on YouTube. If it's from the second day of Tokyo Dome 3 days, I think I have a video.