I think you're definitely onto something there. I remember a preseason game many years ago against the Eagles when Neuheisel was allowed to call the plays for the first half. The call-in show lines lit up in praise of how great the offense looked. By the start of the second half, it was totally shut down, and never looked the same again. Some coaches just can't share the spotlight. I think Cameron falls into that category. It's all speculation, of course. But that's how it strikes me.
And Caldwell seems like he isn't about any of that BS. He just wants to win.
Disclaimer: The content posted is of my own opinion.