You HAVE seen what people who smoke 2 packs a day while drinking at least a 6-pack a day look like, right? The whole Curtis Lee Jones thing happened about 10 years ago, I thought. If he was in his late 30's (and maybe used a bit older pictures), and that's him in his late 40's after a very bad night... it could happen. I'm sure he was already going gray (or was gray but dyed it), and the hard, hard life of white trailer trash can really wear one down.
Nice find, assuming it's really him (and not his father, like previously suggested)