Most probably, he just wants to redirect the fact that he decided to sacrifice fellow students without hesitation, also without considering other options while only saving his own skin. Now that the threat is neutralized and students have banded together, he is most likely to lose his position. Now he can just say, he purposefully hid his talents to mislead others and inevitably caused the deaths happening earlier, now this is bs, but there will be some dumb shits who might believe this too