Both scum are in Pie/Rex/Lunatic/Whiteflame, 100%.
I can see pairing arguments for Pie-Whiteflame, Pie-Rex, and Whiteflame-Lunatic.
Rex-Lunatic could be unpaired. It could be a distancing, but given the situation I’d say 80-20 Lunatic and Rex are unpaired because Lunatic doesn’t need to for Rex if he’s scum, he can just go for me. So he doesn’t need to distance at this moment. And of he’s speculating some negative consequences for pushing me down the line, he would stop Rex from pushing me. So the lack of narrative collusion + Lunatoc sussing Whiteflame + possible opportunity to go for me = strong unpairing argument.