What did Dumbledore have up his sleeve?

[colwilrin]

No: HPFGUIDX 168889

Bart Wrote:
"It has been mentioned. Look for the phrase "already dead".

It is the key to a lot of DDM!Snape theories; that the reason why it
was OK for
Snape to kill Dumbledore was because Dumbledore was already on the
verge of
death, and that Snape was just "pulling the plug"."

Colwilrin:

My initial thought when the hand was mentioned in HBP was that it was
just the tip of the iceberg.  Then, while rereading POA, I started
noticing how the Dementors hands were described and the mental image
it gave me.  This is the exact same mental image that I got when JKR
described DD's hand.  So, this theory started coming to me...what if
the magic that DD encountered didn't just injure his hand.  What if it
was slowly turning him into a dementor!  I don't recall JKR telling us
how dementors originate...they could be former wizards.  So, Snape
would not only be helping a dying man not suffer...but preventing DD
from becoming a dementor.  This would not just be compassionate, but
actually noble, as it would prevent DD from becoming an evil soul
sucker.  This would support DD's sudden haste in having Harry know
about the Horcruxes and Voldemort's history.  He would have known he
was changing into a demeantor, and that his time was limited to convey
the knowledge to Harry.  DD's sudden interest in bringing Harry up to
speed in HBP was something I felt was connected to DD knowing he was
going to die soon.