OOP: What did Sirius do? (well maybe)

[dublexuk]

No: HPFGUIDX 67642

I agree that he may not have been dead when he fell through the 
viel, but its not clear exactly how large the void behind the viel 
is. If its a large and almost infinite expanse it could be possible 
to fall through the viel and end up trapped forever.

I think, unpleasant as it is, Sirius is gone - I am sure Dumbledore 
would have detected he was alive and wouldn't have confirmed his 
death later in the Headmaster's Office and Lupin, who was next to 
Harry and the viel, would have attempted a rescue if there had been 
any clear way to save Sirius.