Roy could be intentionally provoking the new High Priest of Hel. He might not have protection as an outsider, but he did escort Veldrina.

Is there anything saying a bodyguard cannot be the bodyguard of two DIFFERENT representatives at the moot? The rules say each priest has a maximum of two, but they don't mention overlap. If the vampire attacks Roy over his pettiness, she'd have to get smacked down by everyone present.