Yeah, Michigan was quite overranked to begin with, and they are still overranked. At this point in time, just BEING ranked is overranked... Let's see, they beat (but didn't dominate) a nobody, barely squeaked by (ie, should've lost to) another nobody, and got their ass completely handed to them in all aspects of the game against a quality opponent. Yeah, I'm surprised that they are still ranked at all... They aren't "bad" by any means, but they aren't even good enough to compete with the big boys of the Big10, let alone the big boys outside the Big10.
To me, it's looking like Ohio State and Wisconsin (once again) fighting for the Big 10 Championship. Those two seem to be in their own tier in the Big10 this year.