Amusing. Possibly realistic; canon McGonagall blows in the wind according to the needs of the ridiculous plot twist of the moment. But of course Dumbledore would bend the rules to get his boy toy^H^H^H valuable spy out of trouble.
Alternate titles: "Snape's Snap Slap". "Snape Snaps? Slap!" "Snape's Snipes and Gripes. Psycho Sucka!"