It can be stopped if the fans ALL stick together, but the problem is that they won't. In Germany Sky introduced Monday night games in the 1. Bundesliga. Games were held up because thousands of tennis balls were thrown onto the pitch, others had problems because loads of fans blew whistles, and at one the crowd remained silent so the atmosphere on the TV was dreadful. After 12 weeks Sky gave up. A great effort by their fans, but I don't believe it would happen here.