Wisconsin's terrible shooting did them in. OM didn't really play particularly well either, Wisconsin just couldn't throw in the ocean. Those guys live on the midrange jumper and they couldn't hit the broad side of the barn.
I really though OM was going to have to score 65+ to win and i thought they could b/c they are pretty athletic and henderson is such a wild card. So while the outcome doesn't totally shock me, the manner in which they did it does surprise me.