Will did you want to stay in there? All you have to do is slide the multitool down the side of the door to hook over the latch and then pull towards you and latch will go back into the door handle.
Messing around with the spindle is the wrong way to do it.
I wonder what people would have guessed at if you asked them how much they thought the bonus cost. I would have guessed around 3k.
Tome or King of Cats to save this one for you.