Enlarge and/or use the little arrows to go to the next screenshot; the entire event is there. Credit to Lucida for taking them.
Not quite as epic as I was expecting (Jaina wandering around imprisoning a few random mobs isn't quite the war-torn Dalaran I was hoping to see), but eh. Good stuff. Leads in to the Horde version (Rommath's rescue mission) nicely too.
Oh, Aethas. You should have taken up her offer to get out...
Video here, too: