Based on the footage that has already aired Dan & Jordan mention (in more then one episode) that they wouldn't play a game of elbows (pushing teams around/making waves) until the finale leg.
It wouldn't surprise me if they do cut in line, at this point they have nothing to loose. And its the perfect time to do so.
BUt of course any team could.
As for asking who won, even if certain persons did know, I would doubt they would spoil it, unless the footage was a dead, dead give away (yeah season 10 I'm talking to you). I think we have all learned that giving away the big reveal does damage to the show (All Stars). Breaking down the rest of the episode, though thats were you have fun.