Okay, let's look at this (sorry for my relative inactivity, I had orientation for my job). Unless TJ is lying (which I doubt), Coco and Slayerman have both been changed to Coinshot. (let's not call it converted as there's a possibility for actual conversions) Of those, Hoid is one of the candidates who may have saved Myst. Whereas, Coco didn't even vote last cycle, so I doubt that she and Myst are melim teammates.
Hoid also says that he fully trusts the person who made him Coinshot, which I think would only be possible if either Hoid scanned him, which wouldn't be possible if Hoid is also thread controller, or if they are both melims. Considering the already mounting suspicion on Hoid, I suspect the latter.
Hoid has also been less active (though I can't really blame him for that myself), suggesting that he wants to stay out of the spotlight. (also can't blame him for that being a coinshot) Unfortunately, this is also suspicious.
Additionally, if Hoid is exed in the meta game after this and confirmed village, that gives us information, as he can tell us who's the GM he trusts, narrow down who saved Myst, etc.