While the GMAT is a very important part of your application package, its purpose is well defined -- to demonstrate you have the ability to cope with the academic rigor of a top MBA program. The quant part is particularly important unless you have work experience that provides clear proof of quantitative capability.
Any attempt to explain away a sub par GMAT score needs to pass the No Excuse Making Test. Think about your reasons: do they really mitigate the score or simply make you look weak.
Rather than make excuses, try to find an alternative way to demonstrate your quant credentials and overall academic ability like a top GMAT score.
Most of the time, it makes more sense to simply strengthen the rest of your application with a strong personal brand thread long with gritty, specific answers to key essay questions. Tackle the specific questions with specific and precise answers that make your application engaging and unique.