Kinda stupid, but in it's defense and without it what would keep a player from going to another greenside bunker and start taking practice swings to prepare for their shot in the other bunker?
Actually I still think getting disqualified for using a towel to keep your pants from getting wet, and calling it "improving your lie" is still more ridiculous.
I guess from now on, Cink will let his Caddie rake the bunker.
edit 1 - kinda curious though, did no one point this out at the time? While it would be a penalty, it is not grounds for disqualification. Which I would assume was for not knowing and signing the incorrect scorecard.
Although if you catch me doing the same on a weekend round and tell me I need to take a penalty, you would be lucky by my just asking you to rake the bunker, and not clubbing you to death with the rake. I can see it now, this is going to be the new excuse for slow play on weekends. "Well, I had to walk back to the fairway to rake the bunker after playing out of the greenside bunker."
Wouldn't want to break the rules for the sake of being courteous to the golfer behind me.
Yeah, I probably couldn't count times I have broken this rule on my fingers and toes.