From what I can tell they were started by a Tennessee troll, and seem to have no basis in reality.
This seems to be coming up in every thread so I thought I'd make a post to sum up the info for everyone.
Don't know if it originated from this troll, but it's likely this is where the gossip got traction:
Let's hear from someone in Tenn who is not a troll:
I think this is Vonn's brother (correct me if I'm wrong):
How about one more for good measure:
I think that's about where this noise should stop. Looks like it was nothing more than a Tennessee troll trying to get a attention from his Tennessee followers. Remember: don't feed the trolls.