Do you know this for a fact? Not being argumentative, just curious. You're right that neurogenic stuttering does seem different from developmental stuttering. But developmental stuttering is now known to be partly neurological in cause -- so given his accident and his fluency beforehand, it seems pretty likely to me that the accident was a major factor. But hey, I'm not a doctor. There's still a lot about stuttering that no one understands. At the end of the day, all that really matters is coping with it.