We’d really have to know what went on in that room in order to guess intelligently... this is where Tiger and the CSI team screwed up... by not sending investigators in until 6:30 that evening and allowing Stern, Moe, Taz, KEG, Brigette, etc., to all work on a common story.
I assume that Tiger & his police force were previously acquainted with ANS & crew from their past visits to the Hard Rock. Maybe they even provided security during those visits.