Maybe it's just me, but in my mind "original" condition means "as it left the factory." Not disassembled and reassembled by some yahoo who may or may not know what the fuck he's doing. It's not as if there is nothing that can go wrong - the neck could be shimmed incorrectly on reinstall, or a real idiot could even strip the threads in the body.
Please note the small chips in the neck pocket on that guitar....wonder how that happened?

And when they removed the input jack, they managed to pull the finish off the body underneath it.
As far as shipping with a neck removed is concerned....the factories don't do it, and no one else should need to, either, if it is packed correctly.