Me and a group of 3 paladins queued as tank/DPS/Heals were running spires of Ascension on normal…
We ran it 30 times and kept getting shamans and hunters that needed the legendary from the last boss but since our legendary was on the boss before we would just leave and requeue.
Well done 
Hoenstly feel bad about it; but I blame blizzard for not putting all of them on the last drop. clear design flaw.
Wouldn’t they just enter queue again and get a new tank and healer?
I guess they’d also have to wait X amount of time to get another tank/healer… which isnt exactly “instant”
Its pretty instant, they get priority compared to bppl who haven’t gotten into the instance yet. Everytime I lose a tank or healer its like a 15 second wait before a new one appears
So if you abandoned them, how do you know they never got their drop?
Or was this all preplanned?