the crackdown has to start off total and then ease off instead of the other way around, as far as the enforced definition of "bullying" goes.

I agree with this, when it's deliberate bullying, but I'm not in agreement that expressing an opinion that offended the kids who coined the phrase "Heights U" constitutes Bullying. It sounds more like an upperclassman v. underclassman poke at posturing.
Hmm, about that "I'm not class president anymore".. I wondered about that, too. I'd venture to guess that he said he was no longer class president just as a one-off meaning "school's out", you know, defensively to the kid who tossed the sarcasm at him, but we have no way of knowing what is really going on behind tweets.