I think this can be foiled slightly with the fact that not a single bit of interaction between Psy and Caff actually made it likelier for Caff to be voted out yesterday though. If they're S/S, then on paper it was a bunch of soft-bussing, at its extreme it was shitposting, in reality I think it was likely just both of them trying to play up their deranged metas and using each other to do so. For most of D1 Psy was a venus flytrap, chomping down on anything that got too close to him with great disregard for what that object actually was. The only way for Caff to post with a Psy scumbud was to get bussed by him a bunch, and Caff treated Psy as a town!Caff would, which is to largely disregard the legitimacy of any of Psy's actions or votes wrt him.
Bearing in mind that Caff dying D1 was rather exceptional, in the sense that TBZ and realiti were throwaways, M24 jumped on fairly close to deadline and didn't try to convince others to jump on their either. Especially if you are town (because I think you would have identified the problem sooner than either of them, or even any other player in the game), I genuinely don't think Caff expected to die yesterday until Nuxl confirmed that ties are broken by the first to hit the required number of votes. Salamence posited that they felt Caff began panicking more when Nuxl confirmed that on a reread, and Psy basically entered full-on defence of Caff mode at that point. Don't forget Psy actively tried to convince Salamence to vote for OM when Salamence asked about it.
The optics of Psy doing his best to support the flashwagon while not once actually speaking about Caff's alignment also isn't good, and feels like an oversight on the part of Psy or Caff. It just reads as "I don't want to buddy Caff but I also can't let him die".