Cosgrove does bring up a good point, he is viewed solely on his '07 year.
In '05, we did lead the country in sacks and tackles for loss. Say it's the level of talent we had making up for his ineptitude, or what you want, but it is what it is. In '06, we beat all the teams we were supposed to beat (except okie state), and lost to the ones we were picked to lose to. In the big xii championship game and the bowl game against auburn, I thought we played championship caliber defense against both of them (offensive struggles cost us both of those games).
However, '07 just stunk, and I could say it's not all his fault, but it also, is what it is.
I wish him the best...you all should do the same.