Hmm... well, I sure missed the (Su) part of the aura and thus how it should have blocked George.
(heh, reading back on the moves, I got a chuckle out of them... there's a consistent typo that has the demons attacking George rather than K-Pax)
So:
1) George should have been hedged out. We can unwind the damage and roll the blashphemy, that seems to work, then have George be south of the barrier if desired.
2) I can't see how making a touch attack on Brian wouldn't violate the terms of the protection-from-evil hedging. We all agree that the barrier is down for Brian, right?
3) The spirit of the prot-from-evil seems to be about making physical contact, so making a spell-attack via blade-barrier doesn't seem to qualify. I don't see how the invisibility applies - invisibility is an illusion, and that illusion is broken when you reveal that you're there by attacking. This abjuration of prot-from-evil seems different. However, I'm not real happy with that argument either, since that would lead to saying that pincushioning an enemy with a bow from behind an (su) magic circle would be just fine.
thoughts?