After looking closely at your photos, I think it is both wind rub knocking the moss off and it appears that there are two different
fungi (one white and one pinkish in color).
Some times fungi live in conjunction with mosses and if the moss is rubbed or knocked off the fungi become visible.
The white areas on that "spot" of bark would be one of those fungi species. The pinkish hue in one area would be a second species of fungi, over time it
should become thicker if it isn't just a color anomaly of the white fungus or an optical effect from the camera.
If you are concerned for the health of the tree, take a pocket knife and shave one rise of bark so you can look at the back side of your shaving, that will show you if the fungus is going deeper into the bark.
Normally this sort of fungus is not a big health issue for a tree, it is more like lichen or moss growing in the bark.
Redhawk