.... oh... heh. I just realized.... when you say "glare" you mean a horrible whiteness, right? if you didn't adjust the exposure for the camera, it is quite possible that the area to which you refer is completely out of the range for the camera's color chip(s). In other words, that area of the image is "blown out." It is completely white, and there is no color information there besides white. If so, there's no color information to "bring out." So, you might be up a river without a creek... or something. You know what I mean.
btw, to see for sure just what is "out of range," go to the "View" menu, choose "Range Check," then "Excess Luma." It should outline (or give you zebra stripes- I forget) on whatever is blown out.