I'm still on the town side for AB.
AB's claim makes no sense.
I think he is a scum investigator. He got Sorian night 1 with his full role and alignment. He put it in the thread in a very vague way so if he was flipped it would set up scum to turn us onto neutral Sorian. Or get town credit if Sorian flipped as a neutral.
He made it out to be such a big thing too, like no read would tell us something about Sorian. But later he claimed to be a watcher which only tells us no one targeted Sorian. That is not information worth sharing and spilling your role.
He got overly excited when his Sorian target worked out on Night 1.