I think it is just speculation. There was an article in today's links that speculated that it is a torn ACL and that KG is trying to play with it. Let's face it, until he is back on the court and playing regular minutes, speculation will abound from all corners.
Doc said that it was just sore after the games they played and they don't want to take any chances with him and that he may play Friday vs Atlanta. I would take what Doc said over what Ordway says any day. It is a miracle that Ordway was able to tear himself away from Red Sox talk to even speculate on the Celtics.
I refuse to think that KG will be out for the playoffs. If it was something that serious, I think Doc would have told us. KG will play in the playoffs and he will be 100% because they are taking their time bringing him back.