Don't look into it too much. Rex doesn't dress a lot of DL and I'm sure he also will dress an extra DB with the Cowboys passing game being what it is. Remember Greene was inactive a few games his rookie year
Not sure it has anything to do with it but isn't there also still a concern that he could be heading to jail in a month or two or did that get resolved? Just found it..postponed until 2/7/2012. Won't have any effect this season.
