Sin, after this is over he won't remember a thing. He will have no recollection of the pain and the stitches or anything. Dogs don't dwell on things or feel sorry for themselves. As soon as this is over, it will be like it never happened.
And as an aside, I don't mean to instigate, but I would be going absolutely ballistic on the vet that is responsible for this IF they are in the wrong. Vet knows his stuff, I don't =P