Kronos is really making sure that everyone hears so that the students all get together to find a way to change sensei's thinking.
Sensei's best chance at this point is probably to get some infighting going, a lacomment #2423240. Of course, if that fails, to steal a phrase from Lord Dunsany: "And where they took him it is not good to ask, and what they did with him I shall not say."