From the applicant perspective, consider the opportunity cost of attempting to take the MCAT a third time and the kind of pressure you would be putting yourself under to achieve a +14 point bump on your previous scores.
I don't doubt your academic potential, I'm just saying your FL ceiling was still more than a standard deviation from your goal score...and even then, some MD schools will average all your scores, so all of that work getting to a hypothetical 515 may only get you credit for a 506—and that's being generous and assuming you are successful in getting that 515.
To add insult to injury, you get to go through this brutal application cycle all over again. Not fun, to say the least.
Ask for a DO list and go be a doctor. I can pretty much guarantee this won't be the last test you feel you didn't do your best on... let it just be a test on your journey instead of the test that defines whether or not you keep pursuing your goals.