AT&T certainly made a few of us happy yesterday when it announced that the iPhone SlingPlayer app would now be allowed to run over its 3G network, but the carrier apparently embellished the facts a little when it said Sling had optimized the app to be "more bandwidth sensitive" -- Sling's John Santoro told Ars Technica that it "didn't change anything," and that "AT&T never discussed specific requirements with us." So much for that happy narrative -- although it makes sense to us, given