I came here only to comment on that part.
Because it only highlighted how fucking insane and brainwashed those guys are.
He seems to genuinely believe that "HA! SEE! YOU FAILED TO HIT ME WITH THAT KNIFE! YOU'RE INCAPABLE OF HURTING ME! YOU'RE ONLY SUPPOSED TO SUFFER, NOT TO HURT!"
Just batshit insane. I mean, that they already were. But the mastermind brainwashes them on a whole new level.