Wisconsin came to play, and Nebraska decided to not make plays. That first TD was a prime example, Stafford is in position for a TFL or at least a minimal gain, Gordon slips him, and then slips Smith 20 yards downfield, TD. Plays that we had been making since OSU, we stopped making. it was a prefect storm that night, we'd just played our butts off 6 games straight with multiple draining comebacks, while Wisconsin had known about playing in the Championship game for 3-4 weeks. They could play their last couple games vanilla, and throw a couple of hours of game planning a week for us. And it didn't help that we lost Steinkuhler and Jackson the previous week either (though the outcome probably wouldn't have changed to much).
The bottom line though is we just got outplayed that night.