I may have been the one who started a thread about scorched fabric a few months ago. I got good suggestions, hydrogen peroxide is the one I tried. It helped a little. I decided just to finish up my quilt, as this was a small quilt I was going to put on the seat of my sewing chair. I was just going to sit on it, after all, so I figured it would be okay. (I really was very gentle with using the hydrogen peroxide, as I didn't want to remove color from my other fabric.)
Anyway, when I finished and washed the small quilt, the scorching went away. I hope that is what happens for you.
Dina