I think the best way to do it would be to fabricate a two piece plug (similar to the one he chopped up in my link). Run long pins that stick up a lot, use a jig to bend them all at once at a 90 defree angle. Push them down flush with the edge, then insert very long pins into the 'top' row. Bend again to 90 degrees. Pull the bottom row up, thread the top connector on and then trim the pins to the right length. Two part connector locks on, rinse and repeat.
At least, this is the animation in my head that is playing.