Out of curiosity, what is the fate of your game's Glasstaff?
I have this question is because when my players raid the Hideout, they are too slow and before they reach his room he already run away, and join Cragmaw to interrogate Gundern and warn him and the shapeshifter trouble is coming.
Now my players successfully distract the goblins and edge out a brutal fight in the boss room against the trio.
Since Cragmaw is dead, while the shapeshifter is at death door, I rule that being a self reserve PoS, Glasstaff will finish off the shapeshifter and surrender to the party, giving him a better position when negotiate since he is the last lead they have. My party love the way this play out, and in next session they will decide how to deal with the devil
Which make me wondering, beside the ordinary get caught > send it to Sildar, or simply KIA, did your Glasstaff choose a different path in your game?