My initial report was correct. According to Mike Florio of Profootballtalk.com, The Broncos are simply just bringing RBs J.J. Arrington and Correll Buckhalter in for visits after all. Apparently, NO deal has been in place for either player, not yet at least. So we're back to stage one.
Sorry for that miscommunication.
Also, Alex Marvez of FoxSports is expected to change his report from a signing, to a visit. If he hasn't already.