I think it would be best just to make it a single use pardon ability. Having the second one lets him be a vigilante, and I highly suspect players would end up using the second one more often than the first, or in order to get a double lynch in a mylo. Just having the single use of the first ability would be good, though. If the judge knew something that no one else did (he got bread/a gun/a vest), he could save someone from a bandwagon.
Actually, I find the role interesting as it is.