Sorry dude, I played around with it a little, but the results really weren't worth posting.
In any digital photography, when you have an area that is completely blown-out white, there is no way to ever get that area back. If you're using a camera that has a RAW option, you might have some more subtle shades in there that can keep some detail, but there comes a point where the area will just not be recoverable. And I'm afraid that's the case with a large % of this image.
We could always try to "make up" something to paint or clone into the blown out areas, but they probably won't be the detail you're looking for.