That one weird trick...
... to avoid tedious paperwork... Well, maybe not quite. There's a procedure for opening and closing a plug, but no procedure for opening and closing a door. Doors open, it's what they do.[1]
It is possible that the team that needed to get at the bungled rivets in the door frame didn't consider that they were doing anything other than opening a door - the interior trim was already stripped out for the rivet job. However, somewhere along the line the bolts were removed, and possibly they're still in a parts box in Renton: four bloody great bolts, castellated nuts and cotter pins that someone put away and forgot about.
I'm violently agreeing with everyone who thinks that the procedure was insufficiently monitored and quality assured, and guessing that time pressure is what forced out good practice.
[1] And close again, with a sense of satisfaction with a job well done. Couldn't resist, sorry.