From now on whenever a question of Rondo's defense comes up, I go back to the Miami series where they Erik Spoelkstra (spelling?) on "Inside Trax". He says to one of his assistant coach, "Well, we can't get the ball up the court. Got any other ideas?"
Rondo's good defensively, but he takes such a beating during the game, its just gets really difficult to get over screens. Mo got into a groove at the wrong time, I don't think it's a serious issue at this point.