Actually, I recall seeing his show a few times and thinking that he was just a little too fair in some of his questions to fit in with CNN's management and base audience. When interviewing conservatives, his questions lacked the very high level of aggressiveness and accusatory tone needed to please the CNN base. It was only a matter of time.
He'd just get them later, like Louis Freeh. After Brown's interview with LF, Coop asked "what was it like to interview him?" AB: "a little defensive" then moved on to a belittling of what he said.