I hadn't heard anything about this but I've been out of the loop a bit on the sporting news outside of the Cowboys here as of late.
If that's the case and it's something seven years ago that is just now being reported then it's just piling on to get even more people angry with a person that they're likely already angry with.
The only thing that adding that part of the story to, if in fact it was investigated and nothing came of it, does is makes it that much easier for the Vikings to simply let him go after the season is over.