I had a sort of similar situation in baseball. I work one team that has their dugout up and yelling on every play of every inning. They do nothing but yell encouragement at their own players. I'll admit after a full inning it is as annoying as anything I've been around, but certainly not usporting. One time when I had them, there was a big commotion in their dugout and I could tell something was wrong. I walked over and asked the coach and evidently a fan went into their dugout and told them to be quiet. Since I didn't actually see the fan do it I didn't eject him (he stepped in through a door in the back of the dugout). I told the coach and players that I agreed with the fan that they were annoying, but there was nothing in the rules that said they couldn't cheer for their team anytime they wanted.
