uncooperative hostage

[Six-Six]

I experienced a minor glitch just now.

Running Kristoff's final mission, Rescue Prof Vines, I was leading him out of the ship to the extraction point. Out on the deck, I lost leashing for a second, triggering his NPC dialogue, which also alerted me to go back for him a few steps. However, he sank to his knees and refused to budge even after his name had turned back to green (prompting leashing is back).

I've run this arc countless times and this was the first time something like this has happened. I don't know if it helps but sometimes I clear all the longbow on the ship, and sometimes I don't--just getting rid of certain ones on the path to the exit. This time it was the latter. Other than that, I don't think I did anything different.

He did get back on his feet after a few minutes.