But the disclaimer stated "monies were awarded" so it would appear that they did play the second round and paid the "winner" of the game. It's possible that there were a low number of spins (like 2 a piece), and perhaps missed the fair number of +spin spaces, causing the round to come to a swift end with no amount of Peter vamping rescuing that.
But now that you mention it, "monies were awarded" might have been a payment of $1,500 or something representative of an average spin for each spin they had in order to get them to agree to redo the question round. That might be where the "consent of the three contestants" comes into play, as S&P must have insisted that everyone get something in consideration of waiving the rules. A little expensive, but the alternative is scrapping the whole episode and having to pay the winning contestant anyway (legally, they could probably get around that for an unaired show, but not worth the risk). Also, there's additional crew time to pay for, but it would be much less than shooting a replacement episode either that day or at a future date.
Certainly would be interesting to see the outtake of that, but I would assume that has been lost into the ether since it hasn't shown up already.