Right before the Texans 1st extra point attempt, while the player are getting into their stances, one of the chiefs downguys lines up over the center. The Back Judge wlks up behind him and smakes him on the but a few times. He appears to be telling him to get over, the downguys never looks up but does slide toward the guard. I have never seen a Ref do this and was not aware that no one could line up over the center in a extra point attempt. Any one know if this is the case? Are they protecting the LSs.