Oh absolutely further penalties could have been given. I am just trusting the committees decision. As I said, there werr many different representatives from multiple entities at the conference. I am sure they watched the video tape a magnitude of times and dissected exactly what happened.
As outsiders looking in, we only SEE what happened and can speculate while this committee is able to interview all involved and get a good grasp of the whole story and come to a decision. Just one man opinion, and from what i know from the whole thing, I am trusting their decision and believe the penalty of a no contest for the game and the players involved being suspended a further game seems to be fair.
Putting myself in the kids shoes, it would be difficult to stay where I am and not do anything while watching a teammate on the opposing teams sideline getting attacked (perhaps not the best word for it) by multiple players.
Of course it does not make the actions right, but just putting myself in the players shoes where I dont know how I could look at myself in the mirror if I stood and did nothing while a teammate was in the pile of chaos.
I just beliece the rule you stated is more of an individual basis and if the game is continued being played. Since it was a no contest, their is no rule in the rulebook that addresses the next steps. This is why a committee was necessary. Perhaps that committe will add a rule for future contests.