Yes the casuals say that the Reillys were trying to manipulate poor little Victor/Nicole as if they can't think/act for themselves. Of course some outcomes can actually be good for both teams, Team Fun WERE targeting Nicole/Victor and they don't have good relations with the Reillys. As it is the storyline seems setup that the Reillys get u-turned even though they aren't that strong a team.
Actually, Nicole & Victor explained the backstory on their podcast. Apparently the conversation on the train between them & the Reillys was the first time that Rachel & Elissa had ever offered to help them in any way, because they never had any sort of relationship up to that point, whereas with Becca & Floyd, that team was genuinely close with Nicole & Victor, so that's where the skepticism came from. And it does make sense, because if a team you don't have any sort of closeness with tells you that a team you are close with is trying to target you, wouldn't you be suspicious of the ulterior motives too? Especially since we know that Rachel & Elissa have already gone after Team Fun, so it could very well be that their true motive was to get Victor & Nicole to do their dirty work so that they don't look bad to their new alliance. And of course, Rachel & Elissa changing stories halfway through didn't exactly give off a warm fuzzy feeling that they were being completely honest.