174 people failed the Intro block, so you're not alone. And yes, you will have to pay up 500 dollars and retake the entire block, anatomy and all. Keep in mind there is no financial aid for this remediation "course," because legally, its not really a course that will ever appear on your transcript. No one knows you will have taken it, but the school wants its money so it will fail as many as possible to take $$$ every summer. But watch out!!! -- If you fail one more system this year, you're dismissed from the school. And of course, have to repay all those loans from this year. My advice? Get the hell out while you still can, and reapply elsewhere.
BTW, around 40 people failed the boards this past June. NYCOM is a dump, man.
I can't wait to graduate from this school, and for the record, I don't advise anyone to attend this ludicrous "institution."