I've been trying to find the episode where the contestants only earned 1 spin apiece in round 2 to see if this jives with the official rules...but the only scenarios covered in the bible were the alternate questions in spots 3 and 4 (in either or both question rounds), and that they would stop tape and play a new round if nobody scored a spin in the first three questions of a round.
I assume if they did the show today, they would write in similar "do over" rules for any low spin count, regardless of how it happened.
-Jason