UHHH FAG I've seen him do this scream several times live, not to mention all the other vocals (clean/death) were pretty much perfect through the night.
They actually changed the entire way Lepper ends which caught me by surprise. It's all normal up until where you would think "Deafening Shrieks" comes in, but instead of playing that and the main riff, they skipped right to where "7:22" would be on the album "Your body is mine to avail" etc. I thought maybe someone just fucked up, but everyone played that part almost on queue.
Mike also put on the shred during the Godhead solo.