It was one of those rules that were not explained in the rules, but more of a rule of honor. So to make this as clear as possible for you guys heres pretty much what sums it up:
1. He was cheating by talking on squad, which then he upheald to try and get someone else in trouble, he ADMITTED that he had done somthing wrong and knew the cosequences when he sent the email to ROC of fuzeman which ever one.
If you are still saying that it is a new rule, Take this into mind: I was suspended for talking on squad. It is just that simple, he got himself and the CM during that time to get him in trouble as well.
I hope that, this is as clear as possible.