Lissi did mention early on that votes made on wrong VCs will be deemed invalid. Who can say if Euphie checked the VCs beforehand and used that info for his decision? I've said this before but I will not even attempt to figure out what's going on in Euphie's head (that way lies madness), and will scumhunt based on how everybody else besides him acts. Based on my reads and POE, Furnace is the third mafia. I call it stepping back in order to go forward, because making any big moves could've been too risky and backfire instead. I don't know whether you're the type to "give up" if you're mafia but what I do know is that your playstyle leans towards playing safe. If the game end then and there, I think you wouldn't have minded.