Honestly, T-Pein. I can't put my finger on exactly what, but it feels like he's trying to perform the way he usually acts as town, rather than naturally being it. Doesn't go off on his own tangents and seems to be trying to serve someone else's agenda.
One thing that really stuck out to me was that he was trying to pick holes in Jeff, then turned on a dime to voting Grim, which was close enough to the Jester claim that it feels in some way coordinated. Even used the phrase "we have a live one" because he knows that's a phrase he uses often as town, but it feels so unnatural given the lack of prior interaction between him and Grim.
And yes I am aware I'm sussing someone for voting someone who would be their scum mate, but go back to the proximity between his vote and the Jester claim. Grim's plan could have been to avoid getting voted for as long as possible, claim, and then get his teammates to bus because if town believed the claim he's still be alive, and if town didn't his mates'd get town points.