What really happened on the tower.

[pippin_999]

No: HPFGUIDX 155840

  
> wynnleaf
> 
>  If this piece of text is actually a bit of misdirection by the
> narrator, where we're expected to think the petrificus totalus is by
> Harry, but really it's someone else -- then there will have to be some
> time in Book 7 when the "truth comes out."
> <snip>
> 
> It wouldn't be an unreliable narrator piece of misdirection if we're
> never going to find out the truth.  But I can't think of any reason
> why we *would* find out more about this incident.  While JKR could
> probably come up with something, I can't quite imagine a scenario.
> 
> Any ideas?
>

Pippin:
It all depends on what happened to Greyback. If he's been captured,
then we aren't likely to revisit this incident and the easy assumption
that Harry cast the spell is most likely correct. But if Fenrir got 
away, then things could be a lot more interesting.

 I agree that Harry must know whether Fenrir was captured
or not. But if he hasn't realized that all the  DE's were accounted
for, he could suppose that Fenrir got help and escaped back
through the RoR. Meanwhile, the Order, not knowing that
Fenrir was struck down, would assume that he escaped with Snape. 
Harry is the only one who pursues the DE's to the gate, so he
alone knows how many escaped that way. 

The corridor was dark and curses were flying everywhere. Harry
(and the caster, if it is a different person) could be the only
ones aware that Fenrir had gone down. 

if there is a traitor in the Order, that person might have zapped
Fenrir in order to save Harry for Voldemort,  concealed the
werewolf  and then arranged his escape. It would have to be 
McGonnagal, Tonks or Lupin. 

Pippin