I can see maybe dropping OSU 1 for that win, but three? I mean, it was "close" but not that close, and historically, they've had problems @ Illinois for whatever reason. Ron Zook seems to have Tressel's number just a little bit. I think I would drop them only one, because they still won, and dropping them three gives them a lot of ground to make up to get back into the top 2 by year's end, assuming they go undefeated, and I'm SURE you'll agree that if they do go undefeated, they deserve to be in the top 2.
good luck with that