Far be it from me to stick up for Kangas or a Gophers player, however, I would put the blame on the road cones/pylons in the Gophers defense corps. If your defense fails to do it's job eventually it comes back to bite them. I think Patterson would get shelled just as bad as Kangas against MSU-M, UND and Wisconsin.
Everyone loves the Back up goalie until he goes in and proves the fans wrong. I would be willing to bet you that if Patterson was in net against the Sioux he still gives up a bunch of goals as well.