I don't think ETS will rescore anything othe than the AWA. I have seen people saying the same thing before and honestly I do not know what happened. Could it be you did not do well in the first 10 questions and the difficulty level was drastically lowered?
If you have been very confortable with GMAT and have had no problem with questions, you might want to retake it soon. Be sure you need to cover all the corners in your preparation, espacially pace. How fast you should be pretty much determines how carefully you can be.