Requiescat in Pace, My Dark Phoenix

[houyhnhnm102]

No: HPFGUIDX 151367

zgirnius:

> Because if Unbreakable Vows are truly Unbreakable, and act quickly 
> once broken, Snape (who looks like Dumbledore) is about to die 
> anyway, at any moment, when Dumbledore (who looks like Snape) shows 
> up. And Dumbledore knows this. (There's no way they would have 
cooked 
> up this plan between them if Dumbledore did not know ALL about 
> Snape's Unbreakable Vow, right?) The ONLY way Dumbledore could 
> actually save Snape at this moment would be to have himself killed 
> (by either Snape or Draco). SO I really don't see how this makes 
> Dumbledore a murderer.
[...]
> But there REALLY is no way out of Snape dying by Unbreakable Vow 
> alomst imeediately, if Snape does not kill Dumbledore.

houyhnhnm:

Are you saying that the UV can "see" through the disguises? That DD!
Snape is about to die from the UV unless he kills Snape!DD? 

The third clause of the Vow required Snape "should it prove necessary 

 if it seems Draco will fail [...] carry out the deed that the Dark 
Lord has ordered Draco to perform?"

But Draco does not seem to be about to fail the /deed that the Dark 
Lord has ordered/--namely killing Dumbledore.  Rather he is about to 
fail in the attempt to kill Snape (as DD!Snape).  So it seems to me 
that the Vow would not even kick in.