The schools will still see that you did not release your scores, which isn't good. In my opinion, you should just release them, because they are going to assume the worst if you don't. If you obtained a solid score on a later examination, then a mediocre score on a previous one won't hurt you much. Then again, if you got like a 15 on it, I probably wouldn't release it. But, if you were in the mid 20's go ahead and release, you don't want them thinking you got an 18 or something.