Put O'Donnel aside for a moment.
From my understanding, and according to many diehard Steeler fan friends of mine (I have all together too many friends that are Steeler fans), a big part of the power struggle between Cowher and TD at the end was that TD wanted NO PART of Kordell as QB, and Cowher wanted to stick with him. These guys know their Steelers info well enough IMO that I will trust them.