That isn't your fault. We can't help what the Arcana make us into.

[He looks grim, as he says it. He wasn't in the greatest of people, himself, and he'd still had his own mind to endure it... he didn't do as much as he should have to rein the man in, because interacting with that brain had been so distasteful.]

And we knew Tower would likely send you into someone who was destructive. Lay your blame on Tower, not on yourself.