OP -- given this, your committee letter is the least of your problems. Your GPA is inflated by taking a lot of weed-out classes P/F, plus then having Cs in chem 1 and 2. Combined with subpar MCAT scores, and you are marginal for MD even with a good committee letter.
In the other thread, you said you were shooting for MD, were retaking the MCAT, and were thinking about either a post-bacc or a SMP. What changed in the the past 3 weeks that you are now applying without doing any of that, and are now focused on a sub par committee letter?
Maybe the committee letter situation is a sign from above that you need to take a time-out, fix your MCAT, and take a few challenging upper level science classes for letter grades to show med schools that you are academically ready for the rigor of a MD program? JMHO, but the other thread certainly provides some context for why the committee is doing everything it can to discourage you from applying this cycle.