Fergie has being using criticism of the referee and the press to pressure referees for years. Referees afraid of missing out on big games think twice on the close decisions. This action by Chelsea just seems the next level. I'm sure the evidence from their players will evolve over the next few weeks.
Clearly if the allegation is true, Clattenburg is finished. It might be unfair that the Grand Wizard and Bucktooth (this has the makings of a saturday morning cartoon) get to continue after a short ban, but the referee is in a position of authority and that needs respect, unlike captaining Chelsea.
However, if the allegations are proven false they need major sanctions against Chelsea. They have already been accused of fabricating evidence in the Terry case, this is a far more sinister development.