I think this shows just how much of McNabb's success was Reid, and not McNabb. McNabb's QB rating has been horrible this year.
Don't think it matters where McNabb goes. His hand was held in Philly, and all of his whining was overlooked on a regular basis. Shanahan isn't going to baby a player, nor is he going to put up with any BS from a player. McNabb is out the door as he should be. I am guessing this has more to do with behind the scenes stuff than it does actual production on the field.