Bummer, but yes. Statistically these really aren't that different but surely not the improvement you were hoping to see. Best to submit it and be honest, if you ever withheld information it would surely come back to bite you in the rear.
Wait, so if you have an mcat score and decide to retake AFTER submitting AACOMAS, and you do worse on the retake, why would the schools be able to see the new score if you don't resend it? How would they even know that you retook?