Hehe... I like how the article calls it a "scathing attack".
Vanessa said pretty much the same thing here in Atlanta when introducing Private Radio, and it was obviously ment as a joke.
Sorry, deserved or not, Ashlee is now the face of lip syncing and will wear that title alongside Milli Vanilli for the rest of her life.
Perhaps if she hadn't so obviously lied immediately after (my band started playing the wrong song) it wouldn't have stuck as much. But its obvious from later comments (acid reflux) that yes she did intend to lip sync.