Look of triumph in Dumbledore's eye

[felix_quinn]

No: HPFGUIDX 154874

Possible spoilers ahead, if you haven't read GOF or HBP

I'm sure this must have been covered before, but I thought I'd bring
it up in hopes of fresh ideas and theories.
Is there any popular theory regarding the look of triumph in
Dumbledore's eyes at the end of GOF? There are certainly some widely
acknowledged theories concerning Dumbledore's death (or the
possibility of his living) and how or why Snape may or may not be
evil. So is there an equivalent for that moment? I know most readers
have noticed it, at the very least, and sometimes it is brought up
for discussion, but isn't it possible that it might be absurdly
important to the story, and we're overlooking a huge clue? I know
that personally, when I read GOF for the first time, this bit was one
that struck me, and bothered me for a long time after. I was
terrified that somehow this meant that Dumbledore might be batting
for the other team, so to speak, but luckily common sense prevailed,
and with more revelations in OoTP, it's quite clear this wasn't even
an option. So then, what does it mean? I suppose the most natural
assumption is that Dumbledore suspected Voldemort might do something
like use Harry's blood for resurrection, (or at least try) and might
have figured out some way for this to be beneficial to the Order and
their cause. Could it be possible that by doing this, Voldemort has
opened the doorway to his own demise by way of some method that would
not have been applicable if he had NOT used Harry's blood?

"felix_quinn"