@KeepTakingTheSoma @MrAndyNgo True, he can't.
But I'm not too big on personal refutations anyway, because actual perpetrators use them all the time as well. What matters is external evidence. But I'll edit the original.
Also, a variation of 2: he had enough clout in "the community" that anyone knowing about wrongdoing had reason to believe they would become the target of a mob, were they to say anything.
It wouldn't be the first time people keep their mouths shut until a person is dead, because they fear repercussions.