When I was watching some of the Nabisco LPGA tourney last Friday they talked about this ruling because a player (I think Natalie Gulbis) checked with a rules official after she hit from a fairway bunker into a greenside one - she was fine because she hit from inside the bunker, but I thought it was interesting that the Cink DQ has really got people thinking.
What I hadn't read until today was that Cink was talking to Zach Johnson after the round about rulings and this came up and he went to the rules official and basically DQ'ed himself?
Interesting stuff - I'm going to stay away from sand traps.
"The purpose of life is to serve and to show compassion and the will to help others. Only then have we ourselves become true human beings." ~ Albert Schweitzer