The article is unclear on what the ACC's "game management protocol" actually is; give a warning to the persons demonstrating, give a warning to the home team's bench, etc.? Whatever the policy is apparently Hess didn't follow it.
Looking at the big picture, I can actually see the point of officials having a lower threshold with high-profile people who complain about the officiating. The high-profilers can be viewed as extensions of the bench; DC or TGD bitching about the officials is different than Joe Schmo in row 56. Is Hicker a "high-profiler"? Maybe, maybe not (I recall that 1/2 the board didn't know him when he was ejected).