For some reason this makes think of Snape.
You would think the Carrows would have gotten the message... Though the one thing I wonder is why didn't the three houses who opposed them sent traps for them while they slept, capture them and keep them locked up like Barty Crouch Jr. did to Moody...? Then again, that would have taken actual cunning and unfortunately the house with that attribute was waving their Slytherin Pride flags... But I'm sure the Ravenclaw's could have come up with something!
You know, that bit always makes me wonder - the whole teenagers beating adults thing.