One can handstitch the binding back in place. It might show a little bit, but one has more control then attempting to machine stitch it back in place.
If there is machine stitching showing, one can go over the "blank spot" by machine to try to "make it match" the rest of the machine stitching.
One thing to be said about "oops" situations - one's creativity gets tapped.
The other things said about "oops" situations - usually are in the "Oh, golly, gee, shucks" category.