Awww... poor baby. I was worried something like that would happen. I've seen it happen before as well.
Sadly the little one I was caring for basically peeled her skin off like yours right behind her head and it just got worse, so we had to put her down. The tissue was just too fragile to properly suture.
I'm hoping that maybe the area that your baby peeled in will be a bit easier to work with, but this may just end up being a quality of life concern. ;n;