I didn't read through all of this, but the OP is ludicrous.
Not sure how well you remember the 07 season, but we were pathetic. I distinctly remember sitting in the stands and being flat out EMBARRASSED by that team. Points? Sure, we scored a decent amount in some games, but often in garbage time. And that defense is still on the head coach.
The team played like crap starting at the SoCal game. Our team got totally dismantled by a team vastly more prepared than we were. And preparation was what Callahan totally lacked. His pro background led him into the trap of assuming that talent would carry players farther than good fundamentals and practice. This is a team that spent years - YEARS - not even having full contact practices.
My God, I remember Ball State. Thinking to myself, how does a BCS league team play down to the competition like this? Then we sneak by ISU, with the help and Bo Ruud TD. Missouri absolutely depantsed us. Then wheels started flying off left and right. The team lacked motivation, fundamentals, you name it.
And lets not even forget one of the most glaring mistakes of the 2007 season. Remember a guy by the name of Sam Keller? You might not. He was our starting QB for much of the season. And he was not good. He was the king of the check down pass. In fact, Marlon Lucky was the lucky recipient of that and amounted for quite a few receiving yards. Anything over 15 yards was an anomaly. Then late in the season, Keller gets injured and in comes Joe Ganz. And absolutely lights it up (comparatively) and actually keeps us in some games - if not for the defense. Callahan lacked (insert your reason here) to actually start Ganz over his golden boy Keller. This type of favoritism was foolish in the extreme, and may very have costed him quite a few of his earlier games.
I had the pleasure of meeting Callahan, and he was a class act. Great guy, who I would have no problem drinking some brews with and talking football. But as a head football coach, he didn't know what he was doing at the college level.