Yeah, placing you back at the stairs is the way the game recovers from a crash.
This sounds almost certainly like the
same problem that Enno reported.
I don't have your crash.log file on the server though (doesn't look like you don't have it set to upload). Check the game directory for that file and attach it here it if you can, thanks, just so I can compare it to Enno's and confirm it's the same issue.
And thanks for reporting and for the detailed description.
It's something about disabling machines (or just getting locked out?) then observing them that was apparently recently messed up. Since the problem is not caused right at the crash point, but sometime before that, I haven't found the cause yet--need more info :/ (Even after seeing where it crashed, I have no idea how to replicate it, either
. This is by far the toughest bug encountered in the entire project so far... but it's going to be a super easy fix once found.)
Another question: Had you disabled/destroyed other machines on the same floor before the garrison?