I don't see a huge list of power roles remaining. There could very well be a martyr/hooker, inspector, replacement man, or possibly some small info based role.
No matter what, Quagsires will not die at night. He is very strongly mafia and they will not think to off him. Why would they off one of their own? Ullar is likely going to be killed for his idiocy unless the mafia have found the real inspector and I'd rather know who the hooker/inspector/other info role has targeted than let him die without any info.
You're missing vigilante and I am personally uncomfortable with any of these roles claiming, hence my reluctance to say one way or another whether Ullar should claim. However, if Ullar is the alliance checker then he obviously needs to speak up. Sadly, the mafia can infer things just from Ullar remaining silent, so he may as well claim now so that we're all on an even footing instead of the mafia having an advantage by killing him off tonight (since, unless they know a better target and because I think they might shy away from the core group of users until they start lynching each other just based on their choices for kills so far, Ullar is an obvious nightkill candidate), as much as I hate it.
I feel like part of this comes down to whether you believe Quagsires is clean or not and whether Ullar is going to end up sacrificed. I wish I could say easily whether I think there is a possibility Quagsires will die tonight, but that is impossible because Quagsires is not here to tell us his result / if he was hooked.
B_T: I'm the one who drew attention to Ullar slipping up (#799 off the top of my head). And I drew attention to it again because I interpreted you as trying to pin it all on billymills. Regardless of what I think of your alliances, that was an inconsistency I was uncomfortable with letting go by unchallenged, and I'd rather 'own up to it' since I have nothing to hide. I'm not so sure now though since you implied you missed the exchange between Ullar and me. If this is the case then okay, whatever, my misread on the situation.
ETA in response to the below: Sorry, I've really dropped the ball today -- didn't see Quagsires' post.
OK, then that explains why you are so 100% positively absolutely sure he is scum. Interesting risky move on your part to hook the apparent AC, but an effective way of flushing him out (unless PRIORITY OH NO) so I won't really condemn it for the moment. I mean, let's be real, you obviously didn't believe he was AC even before the hook or you wouldn't've risked it.
If Quagsires is dead tomorrow, it'll be at the village's hands, I expect. There's no reason for the mafia to kill him while his very presence sows chaos. And if he is mafia then lol well.