You did not imagine it--I also remember reading from Dorsey that Timex used a jig to hold everything together as the movement went down the assembly line. If I remember his post right, he almost scored getting one surplus but the deal fell through some how (I don't remember what he said happend to the deal).
I suppose with some thought and imagination, we could make something to hold things together during reassembly. Timex service bulletins clearly prove that Timex intended to guide watchmakers through a complete teardown to repair or replace a broken part, so it clearly must have been possible.
I just wish I had a real watch maker I could learn from. Everything I've learned so far has all been self-taught through reading books and a lot of trail and error.