Ok, to fix that patch of glare, use a Levels layer:
Red channel 0/1.00/25 and 0/255
Green channel 35/1.00/255 and 0/245
Blue channel 45/1.00/255 and 0/240
After masking that layer as accurately as possible to the area, you'll probably need to add a new blank pixel layer above it, and gently clone to blend any troublesome edges.