Obryn
Hero
This is precisely how I ran the Irontooth encounter - and it was a good thing, too, since it was a total wipe. Only one of the PCs died, and that was from the side-effects of a friendly fire Acid Arrow.Why didn't you call it a capture?
Hobgoblins bandage the dying, put them in the cells, plan to either (a) get them sacrificed to Orcus or (b) sell them into slavery.
Party then get to plan and execute an escape attempt from the jail cells (which are next to the torture chamber) and proceed from there.
This fits with the hobgoblins desires and storytelling imperatives
(This is exactly what happened when I last ran the game)
Cheers
The existences of Kalarel (who needs sacrifices) and the Bloodreavers (who pay for slaves) make capturing the party a very smart choice for almost any group of creatures in the adventure.
-O