Yes, the broomsticks were explained--it was the reference that Scrimgeour made to the "someone" that really stuck with me. WVMM is right, though--HP did stun one of the Death Eaters when he was released from the body-bind--the DE landed on the stairs, and HP jumped over him. I think that is the DE that Scrimgeour is referring to (pardon my syntax!), and any Order member present could have questioned him afterward. I still think that's odd, though. There is no mention at all of any of the DEs being left behind, with the exception of the one who was accidentally killed. Wouldn't someone have mentioned it in passing, at least, later on, when they were all gathered at Bill's bedside? I think that it would be pretty big news, having one of the DEs. No mention is made.
You know I forgot something from POA, p. 427 about Peter Pettigrew:
"Pettigrew owes his life to you. You have sent Lord Voldemort a deputy who is in your debt... When one wizard saves another wizard's life, it creates a certain bond between them...and I'm much mistaken if Voldemort wants a servant in the debt of Harry Potter."
Oy, that has to come back in the final book, I doubt Wormtail told Voldemort about that or he would be dead. Let's not forget either that Harry's and Voldemort's wands will not do battle properly against each other, who knows what could happen besides the reverse spell effect.