I wondered this a while back too. Last year I had a roommate that was applying to medschool with a poor MCAT, but a very high MCAT writing score.
I can't remember his score anymore. But he wasn't accepted to any school. This is his third year applying, I believe.
Did he ever retake the MCAT? If not, he could look into med schools outside the US. How about a DO program instead of MD? It's much easier to get into a DO program with a low MCAT score.