It seems somewhat odd that a sport that loves to pimps itself so hard of how it follows the rules, seems to be so blase/non-committed on this issue.
Did they cut DJ any slack in the PGA a couple years ago at Whistling Straights because he grounded his club in the bunker, which doesn't even play as a real bunker for non-tourneys? I mean hell that seems a lot more harmless than guys playing slow and holding up the entire field. NO they didn't, they said "here are the rules, you broke em, you get accessed the penalty and you miss out on the playoff. You don't like it that's tough beans, see you next year". Its as simple as that!!
That's why I don't get the kiddie gloves things on this issue, when they are such "bad-asses" for rules otherwise.