Spinner's End Most Important Clues Chapter?

[Cindy]

No: HPFGUIDX 135666

I posted earlier that I thought either Snape did not fully understand 
the plan when he took the Unspeakable Vow (making it null and void) or 
it is proof that Dumbledore died a real death, otherwise Snape would 
be dead for failing to keep the Vow to Narcissa. Throughout the entire 
Vow "ceremony", not once did Narcissa say "Dumbledore" or "Kill". 
Narcissa was very specific about protecting Draco, but vague in the 
specifics of the "deed".  

Now I am thinking that it wouldn't matter if Snape knew the full plan 
or not.  

pg. 37 AE HBP

"Bellatrix's astounded face glowed red in the blaze of a third tongue 
of flame, which shot from the wand, twisted with the others and bound 
itself thickly around their clasped hands, like a rope, like a fiery 
snake." 

This doesn't sound like the vow "didn't take", so I don't feel there's 
any point of believing (hoping!) in a "Dumbledore's death was faked" 
storyline. So my conclusion now, sadly, is that Dumbledore is dead, 
the kind of dead that you don't come back from. It still leaves 
speculation that Snape could not have known exactly what Draco's 
orders were, and he spent most of the entire school year trying to 
find out fully the mission Draco was ordered to fulfill--in fact, he 
was all over Draco like a cheap suit to the point that Draco thought 
he was trying to steal his thunder. It might explain the argument that 
Hagrid overheard Snape and Dumbledore having--where Snape didn't want 
to do it anymore...because he found out the deed was to kill DD? 

And then there is Wormtail.  Does anybody believe that Voldemort sent 
him there to "assist" Snape?  In doing what?  Snape relegated him to 
servant status and Wormtail was listening at the door.  I think he was 
put there by Voldemort to keep an eye on Snape. For what reason? That 
Voldemort doesn't trust Snape? That puts an interesting "spin" on 
things...DD trusts Snape to the nth degree and Voldemort doesn't. 

Snape also gave Bellatrix "spin" after "spin" of justification for his 
behavior since Voldemort's fall while making her feel disloyal and 
inept. I think this chapter is named Spinner's End because that's 
exactly what Snape did. Like a spider surrounding his victims with 
web, Master Spinner Snape convinced his DE critics (including 
Voldemort)with his words and deeds in this chapter. Now, the question 
is, where does his spinning end?