Was Cowher conflicted this season? Yes. Did he "quit"? No more so than his team did.
How is Cowher showing enough emotion to satisfy you supposed to make Ricardo Colcough better suited for fielding punts? How does it stop Ben's cobwebs from throwing bad passes?
I don't blame the Steelers' poor performance on Cowher either. But a young Cowher, with his head and heart fully into the game, would been chewing on asses left and right in the face of the poor playing and dump penalties. Instead, he just shrugged it off.