It's pretty obvious why Bucky chose not to play. They knew they would actually lose this one, and lose another title shot.
We played with a 3rd string QB last year, 10th string kicker, star players injured, ect. We knew we could easily lose games, but we didn't have the luxury to cancel. Wisconsin didn't need to cancel but they chose to, potentially hurting our own title shot. They shouldn't be allowed to gain from not playing while we are punished. There are too many loop holes for them to gain and us to lose from a game we didn't have the option to play.