I've recently seen the video of Kenny Perry patting down grass behind his ball in a playoff he eventually won earlier this year in the FBR Open.
Let me first state that I like Kenny Perry. A lot. I like him even more after talking to him for a few days at the Masters this year when he was more gracious in defeat than could ever be expected of anyone. He was entertaining and honest in interviews throughout the week.
Having said that, the video clearly shows Perry improving his lie in the rough near the green. Quite simply, he cheated. And contrary to what he has said about the incident since, he knows he cheated. Just as Stewart Cink knows he was cheating in a playoff at the 2004 Verizon Heritage at Harbour Town Golf Links when he swiped his finger to draw a deep line behind his ball in a fairway waste bunker to improve his lie, claiming he was merely trying to remove loose impediments. Without the sand impeding his shot, Cink stuck the approach to 10 feet and holed the birdie putt to defeat Ted Purdy, who is still peeved about the ruling to this day. In my opinion, Cink got permission from a rules official to flick loose impediments, and knew he could use that as his defense. But, just as Perry did, Cink knew he was breaching a rule. Even weekend hacks aren't brazen enough to draw a line behind their ball in a bunker or pat grass down behind their ball in the rough and claim they're playing by the rules.
The game and its keepers have always prided themselves on golf being a gentleman's sport where players report their own violations. This makes you wonder how often players knowingly skirt or stretch the rules, or don't report blatant rules violations. Granted, some golf rules seem silly and unfairly penalizing. But either you play by them or you don't. And I know two guys who have chosen not to when a tournament was on the line.