http://www.livejournal.com/users/dj43/98632.html has screen captures. Better than the ones that Petridish is balking over. (Petri isn't uploading jack at this point for just about anyone.) Needless to say, spoilers over thattaway.

DD2432.jpg and DD2433.jpg are that Snape moment. You know. Sleeves. (I love meself some snarky vicious schoolmaster.)