I whac'd the mod in
Game 6985371, and he happened to be the first one out, but it wasn't community collusion.
Still, if it had been, it's technically "fair" as long as such collusion is stated in game chat; and the mods have to know that that's going to happen with any whac-a series.
But those who think that they required a pm for password and tried to hold games for freemiums in order to assure "mods win"... I don't think so. In past and this Whac-a series, mods were willing to try to accommodate special request games, provided the player requesting wasn't trying to hog the wins to the exclusion of other players' chance to get a whac medal.