I'm very glad Niu survived. I don't know that I could've taken them being wiped out with no one knowing.
I have to say, though, the timing seems weird, still:
The hobgoblins report in.
The elf rogue* polymorphed into a hobgoblin overhears the report.
The elf rogue reports in (presumably magically) to the Resistance.
The Resistance sends a heavily-armed strike team to recover the phylactery.
The hobgoblins, who are saying "we need to turn this in to Jirix ASAP" come out.
The Resistance strike team overruns the hobgoblins.
The Resistance comes back to find Redcloak and his summonses and planar allies have assaulted the base in the meantime.
Now, maybe the path the hobgoblins were taking was close to one of the Resistance tunnels. And maybe the Resistance strike group were already out and could be rerouted asap.
But this just seems a touch off. Though I could be reading too much into this.
Brad
* - BTW, anybody notice that the elf rogue is still, theoretically, alive? At least until the polymorph wears off. Though it's entirely possible that the rogue was known of and ganked as soon as they were no longer needed?