I have a feeling its going to be alot closer than some predict. 
The spread is only 5
Oh man of two awesome first names, you must remember that the line is about balancing the handle. It comes down to the fact that 'Husker fans will bet on the 'Huskers no matter what, so they oddsmakers can't provide a realistic line on the games they play. Those inbred red wearing, Runza chewing d-bags will always believe that their team will beat any other team due to their past greatness and bet a good hunk of the family farm on it to boot.
On the other end, the OU fans have been disappointed enough this season with some losses they didn't anticipate, so they are more than wise enough not to bet it all on any game. Instead, incentives must be made (such as with a ridiculous line as with this game) to lure the cash out of their ratty pockets and so their unwashed hands can toss that bet up on the counter. If the line isn't set so they are sure of the win they'd prefer spending what little cash they have on cheap whiskey for girls with no teeth.
Thought I'd just clear that one up.
Later,
Sam S.