(It's very difficult for me to justify voting a lynch on someone who has came forward as the Ventrue when they have yet to have a challenger come forward. It's a bold move for Guy, granted, but I can see where someone's thought frame might be if they did such a thing.
I suppose if the Harpy promotion comes through we could resolve it easily enough, since it entails a reveal of "sides". I'm not a big fan of the idea of using resources on such a thing, though, because if he comes out exactly as he says we have traded both a day's lynching AND a valuable resource (Harpy power) in exchange for verifying a single piece of information.
I'm a bit confused how we will know that there "is no other Diablerist" if Guy is staked or not at this point? My understanding is all that is revealed by Blythe is what his PERCEIVED affiliation is, which if he is lynched, is going to be 'Sabbat' regardless if it is true or not. If that is not the case it would completely invalidate the strategy in the Wraith role that Blythe has laid forward. Our only guaranteed sources of pinpointing affinity are the Harpy power, and, obviously, the Sabbat victims.
Maybe I'm misunderstanding something, but as it stands, a vote for Guy just doesn't make sense to me. That's not to say it won't, but I need more than that. If I have stated a rule understanding erroneously, I very much welcome a correction.)