Deleting a factual inaccuracy on my already submitted common app?

so in short, on the education section of my common app it asked me if my education was ever interrupted due to a change in schools in high school. Because I had changed schools I wrote an explanation as to why (in said explanation I accidentally made a couple of pretty bad typos). After sending in my app, I realized that they only wanted an explanation if my changing of schools caused me to miss school, which it DID NOT. Currently the admissions offices for my schools are closed, so I cannot call. My question is, if I send in a letter instructing the clerk to DELETE that part of the common app so that the admin officers don't see it, will they actually delete it or will they just attach the letter (thereby risking that the admin officers see this crappy typo ridden technically inaccurate first explanation).</p>

<p>Your best chance is to call.</p>