So we've seen the line move towards Utah. Opened with BYU favored by 5 and now only by 3.

So the first assumption is that more people were betting on Utah and Vegas moved the line to balance it out

But, looking at https://www.sportsbettingdime.com/college-football/public-betting-trends/

Shows that 93% of the bets are on BYU. Which means for the line to move to Utah would require the average bet on Utah to be 14x larger than the average bet on BYU.

Tons of low value BYU bets and a few huge whales on Utah

The alternative is that Vegas is ok with a lot of exposure, knowing they could lose a lot if BYU covers, but confident enough that they're willing to risk a lot to make bank if BYU fails to cover.

Either scenario is kind of an interesting and weird one