Sadly, this is all too common - administrations shooting off a cannon to kill a gnat - and the cannon always seems to be pointed right at the greek system.
A few years ago, a fraternity pledge died of alcohol poisoning that he got from drinking heavily at a pledge activity. The administration immediately turned around and said: "No alcohol at any event where even one person under 21 might be present." Departments didn't get busted for having wine at holiday parties... several dorm parties, including one run by people in my dorm, went off as planned even though alcohol was a prominent feature and many underage people were present... but a couple of days after the ruling was announced, a fraternity got busted for having a keg. It was an EMPTY keg that they'd gotten for an event that took place BEFORE the alcohol ban... the liquor store's delivery truck came by to pick it up, and right behind them were the campus cops.
Can you say selective enforcement??