what was Dumbledore's plan, really?

[rbookworm46]

No: HPFGUIDX 138158

Virginia:
What if Siruis voluntarily decided to take that task to himself, 
because he felt useless to the Order and wanted to do something 
important to help defeat Voldemort. If this is the case, maybe some 
other member of the order has to kill Siruis, (Tonks maybe?) but 
make it appear as if Sirius was murdered by Death Eaters to avoid 
suspicions about Siruis death. <snip>  

Bookworm:
I tried to respond yesterday, but luck or Yahoo!mort was against me
– the system crashed just as I was getting ready to click Send.
:-(  Anyway, this idea seems to fit Sirius' personality.  IMO,
however, if Sirius had volunteered, Harry wouldn't have seen 
the "look of fear and surprise" (OoP, Ch35) on his face when
Sirius fell.  

Virginia:
It also would explain why Tonks felt so miserable and guilty about 
Sirius death?

Bookworm:
I don't think Sirius and Tonks knew each other very well.  She
would have been only about 8 years old when Sirius went to Azkaban.  
And Sirius said that Tonks' *mother* was his favorite cousin, not 
Tonks.  I thought it was pretty clear at the end of HBP that
Tonks' depression was because of Remus' rejection, not
because of her cousin's death.

Ravenclaw Bookworm