Deranged people aside...
...surely the simple answer here is to have a section on the usage of camera's added to the Millenium rules, stating clearly what is allowed, one way or the other. Petty, I know, but maybe the only way. Though teams may have a problem with being told they can't film, I can't see the issues raised being as bad as if ONE team are told they can't film.
The main issue here, as I see it, is one of bias by vested interests. Such bias, and the associated comments, must have a psychological impact on the targetted team, regardless of the specifics of the comments made.
Maybe that is the idea.
Urban