This story is bogus,and has circulated on several other gun forums. When the person that wrote about the accident was questioned about the said injuries and to show proof of his injuries he disappeared. Another person contacted S&W about it,and they were unaware of it even though the author of the post said he had been in contact with them about it.
Not that this doesn't happen from time to time. This story just didn't happen the way it was written or to the person that wrote it.
Here's a link to another forum on the same thing.
KABOOM....Another Ouchy, S&W 629. - Page 5