I'm betting either jackass doesn't know much, or something happens to make him useless, either forgetting or being so screwed up by the aftermath he can't talk.
Lol.
Despite the risk of it making me the reply guy: The real problem's that a) They were only supposed to use griffons, so jackass broke the rules, and b) Well, you could already see signs it was in charge, not him.
And oh booyyy, not like it's the only thing to worry about, although Leo, come on, it'll be your fault if that one ends up hurting a student, because you noticed as soon as it began...