While Cutler is definitely part of the problem, Lovie Smith is more for so many coordinators in Chicago than the QB is. He lost his job mainly because he couldn't find someone capable. While the defense was the best unit on the team (dominating at times), it didn't have as profound an effect. But as the talent slid to the offensive side, it became more of an issue.

If I remember correctly, the GM had a hand in sacking one OC, right before Martz got hired and the whole thing fell apart.