That's an old article from back in March - when oil was still well over $100/barrel and gas pushing $4/gallon.
Take a look at this website -
CRUDE OIL PRICE: Oil | Energy | Petroleum | Oil Price | Crude Oil Charts | Oil Price Forecast
Oil has been under $100/barrel for over a month, and well under $90/barrel for several weeks now - bouncing along around $85/barrel for a couple weeks now.
It's the price differential for the refined products that's interesting - gas and heating oil trading at approx $2.70/gallon - yet the cheapest gas I can find locally is 3.35/gallon regular, and diesel is even worse - 3.70/gallon, a full one dollar markup.
It's not that we're exporting our domestic crude, it's that we're exporting the refined products from such at a frenzied pace.