I think you are out of luck on not having to use those grades. Here is a cut from last year's AMCAS guide:
You must include information and corresponding grades for every course you have ever enrolled in at any U.S., U.S. Territorial or Canadian post-secondary institution, regardless of whether credit was earned, and including any courses removed from your transcripts or GPA as a result of academic bankruptcy, forgiveness, or similar institutional policies. All courses that appear on your transcripts and for which a grade and credit were ever assigned will be included in AMCAS GPA calculations, even if they are not included in the GPA calculations of the transcript-issuing school. This includes, but is not limited to:
Courses from which you withdrew.
Courses for which you received a grade of "Incomplete" and for which no final grade has been assigned.
Courses that have been repeated.
Copyright 2004 AAMC. All rights reserved 24
AMCAS Instruction Book for the 2005 Entering Class
Courses that you failed, regardless of whether they have been repeated.
Courses in which you are currently enrolled or expect to enroll in prior to entering medical school.
Remedial/developmental courses.
College-level courses you took while in high school even if they were not counted toward a degree by any college.
Courses taken at an American college overseas.
Courses removed from your transcripts or GPA as a result of academic bankruptcy, forgiveness, or similar institutional policies.
You must:
Enter courses exactly as they appear on the transcript of the school where they were originally attempted, not as they appear on the transcript of any school which may have accepted the courses in transfer. Exception: Repeated courses and courses removed from your transcripts or GPA as a result of academic bankruptcy, forgiveness, or similar institutional policies should be entered exactly as they appeared on the transcript issued prior to removal/repeat.
Enter courses in chronological order. Within each term, list the courses in the order in which they appear on the official transcript.
