A very well written and very accurate (as far as canon goes) fic. I have used the blood bond myself in three of my unpublished stories, (which are now somewhere in cyber-limbo, due to a computer failure. *GAAAAHHH!!!*)
Snake...erm, i mean SnaPe is the perfect stooge to destroy the wards. He's trusted by Dumbles, and likely could worm the location out of him.
I really loved the hell-for-leather last charge. Dumbeldore took as many as he could knowing it was a useless gesture.