Dumbledore lied to Harry... AGES ago.

[eggplant107]

No: HPFGUIDX 175881

 "Beatrice23" <beatrice23 at ...> wrote:

> DD tells Snape that Harry must die and
> lets Snape and for a brief period Harry
> believe that he is to be slaughtered,
> because Harry NEEDS to believe this 
> inorder for DD's plan to work. Harry 
> has to willingly sacrifice himself. 

That would explain why Dumbledore lied to Harry but it would not
explain why Dumbledore lied to Snape. Besides, if it were true don't
you think Dumbledore would have said at King's Cross "I knew you would
live from day 1 Harry".
  
> DD probably guessed that Harry could 
> not get to the snake without 
> encountering LV first. 

Not according to the book:

"If I know him [Harry] he will have arranged matters so that when he
does set out to meet his death, it will truly mean the end of Voldemort".
 
I don't think Dumbledore could have been much clearer on the subject.

> I think he was injured/knocked unconscious,
> because he destroyed his own horcrux.

And the fact that one Horcrux remained greatly cushioned the blow.
  
> The horcrux actually defends itself
> and Harry when Harry excapes from Privet drive. 

That had nothing to due with a Horcrux, it was Harry's wand.
Dumbledore said "Your wand recognized him [Voldemort] when he pursued
you, recognized a man who was both kin and mortal enemy, and it
regurgitated some of his own magic against him".

  Eggplant Gellert Grindelwald