Froyo.
I didn't like his initial response to my "gambit". His response (after his first message) was that he was already thinking I was gambling there etc.
I thought that was scummy, because who else would be so obsessed with the question of whether I was bluffing or not. In my opinion that increases the likelyhood that his initial response was fake.
The second thing is that I didn't "just" accuse Froyo that day. The night before, I roleblocked him, and no one died. The night scene even hinted to the possibility of a roleblock. I left him alive the next day because his response did was "townish" enough to put a bunch of other people above him in terms of scummyness, and I knew there was still at least one other town RB'er active that night, so it might be that this other person could've hit the real scum. However, this other RB'er publicly claimed to have RB'ed Jamie. And unless Jamie is the godfather, he is town. So that made me requestion his alignment.
I decided to kill him, using my third and last ability. Either was he was scum, or he was town, but that would not be a problem since we have enough days left if it is a missed shot. And it would provide us with the information of who else could then be scum.
But Froyo survived, apparently because he got swapped with someone else. This other person however, seemed to be immune for kills.
The missing piece I was looking for was who that bus driver was and who he/she swapped froyo with.