Dumbledore's death

[auruor]

No: HPFGUIDX 134215

Hi all. This is my first time doing this so apologies if I do it wrong. 
I have a theory, sorry if others have already said this, Dumbledore 
isn't dead it was Slughorn in the lightning tower. Not just a wild 
idea, does any one else think that Dumbleore saying "oho" in the cave 
was unusual. It is an expression used several times by Slughorn. 
Secondly JK doesn't explain what Slughorn is with reference to him 
being a chair/sofa at Spinners end. As I said my first time!

Auruor.