These two main points say it best: (sounds familiar too
First off, a player should ever lose their job because of injury. That doesn't seem right. From all reports, Ford has worked his tail off in his attempt to comeback. You think he was visualizing the bench every time he ran lines or lifted a dumbbell? No way. The starting spot was Ford's before the fluke accident; it should be his when he returns. To take it away from him would be emotionally deflating.
In addition, Calderon has proven he can succeed in both the starter and back-up roles, so you have to believe his play would remain steady. He has a lot of experience preparing for a game off the bench; T.J., not so much.