I looked at the repair video. It is pretty much as I expected: the controller is held together with plastic "snap fit" and very few screws. This makes it difficult (although not impossible) to disassemble without breaking off one or two snaps, especially if you're doing it for the first time. Not a big deal because you can use a little glue in place of the snaps when you reassemble.
The actual micro-USB looks to be flow soldered, which is beyond most people's ability to remove and replace. I have a solder station and dedicated de-soldering station, and still don't fee qualified to do SMD rework, so I wouldn't be able to replace just the connector. However, the video does show that you can get a complete circuit board part which contains the micro-USB to replace the damaged part. So, it is a module swap. For someone who has done this exact repair a few times, they can probably do it all in under fifteen minutes (the length of the video). For someone like me, that has done hundreds of similar repairs, but never opened this particular controller, it would take at least two hours, and I'd probably break a few things along the way. So, I would look for one of the repair people (there are two recommendations in this thread, and dozens more elsewhere in this forum) who specializes in this and compare their price to the price of a new controller.
I recently paid over $300 to get a Firewire/1394 connector replaced on a 2005 camcorder that still produces better video than more modern cameras (great glass). There is only one shop in the USA who will do this, and they charge accordingly. This was less than 10% of the price I paid for the camcorder, so it seemed like a pretty good deal.
