Give it time before declaring victory. Orton wasn't the problem here, the problem is still here - Ron Turner, and so far Cutler has acted very professionally. If Orton was still here, the Bears at best would be 3-3, at least defenses have to worry about Cutler throwing the long ball.
If you remember a couple of years ago Brian Griese pretended the earphones weren't working a drove the Bears to a victory. He was not a big fan of Ron Turner either.
Orton is a good quarterback in the right situation - they are calling a very good offense out there and he is playing well. I saw him in person put 500 yards in offense on Indiana when he was at Purdue.