The 90° pick solution worked great - thanks! I had all of the same symptoms listed here for my 2015:
1) You need a stiff wire, 6" long with a 90° bend and a 1" long tip - 7" of wire total. The Home Depot pics could work or you could make one out of coat hanger wire.
2) The silver metal locking pin is at the very top of the socket and you can't see it from any angle. It's small, maybe 1/8" in diameter
3) I inserted the 1" bent tip blindly between the charging plug shield and the socket with the tip in the 10:00 position.
4) I blindly rotated the bent tip until I touched the locking pin, then made a few in/out motions to try to push the pin back into the socket. Didn't know what I was doing, so I fished around.
5) It seemed that the pin was lightly 'stuck', and wouldn't slide back on it's own... just needed to be lightly 'nudged' a bit. Odd, because when you pull on a locked connector you'd expect that pin to larger and require more force to deal with.
6) Some WD 40 and it works smoothly now - saved a week in the garage and full tear down.
Suggestion to EVERYONE - a shot of WD 40 on that pin now, followed by a lock/unlock/lock/unlock sequence, should save it from happening in the first place.
Oh, and put your new bent wire in your glove box just in case.
UPDATE: This kept happening, but ONLY with the 110V home charger. The wire 'nudging' trick described above worked, but got tedious (particularly in pouring rain) - so I clipped the latch tab on the end of the plug with a pair of wire cutters, problem solved forever (obviously)! I'm an engineer and it looks like there is interference between the metal locking pin on the car side (photo in a previous post) and the latch tab on the plug side... it seems to stick, even get hung up entirely forcing some to have to be towed back to VW. A design/quality flaw... snip off that locking tab and you'll be good forever!