Sorry about the re-applicant status next year. You're right, with a low MCAT score it would look like poor judgement in applying. However, it's already over and done I'm afraid, as several have already said. This is why most people try to have an MCAT score before submitting their primary, so they have a good idea of if they will be competitive that cycle or not.
One thing I have learned about advisors is that they are unfortunately not always right. It's obvious that your advisor's lack of knowledge spurred you to withdraw when other than saving you secondary fees, it isn't really much to your advantage at this point.
However, don't panic! Just improve your application and give it a go again next year. If people can come back from abysmal gpas, institutional actions, etc, then you will be fine.
Good luck next cycle! And stick around the boards, because we have a lot of good procedural info. 👍