In a Twitter DM exchange with Joe McPherson, I discovered that the intrepid restaurateur has relocated to the Cheonggyecheon:
Cheonggyecheon. 99 Cheonggyecheon-ro, Jongno-gu
He is partnering with OK Burger, and my understanding is that his food is appearing on that restaurant's menu. Joe writes:
Yes, I'm permanently at OK Burger with Susumu Yonaguni as my partner. I'm incorporating my BBQ and dishes [into] what already exists. Actually, we killed everything but three of the original burgers, fried shrimp, and cheesesticks.
Joe just tweeted a picture of his famous smoked chicken, so I hope that that's also part of the menu (chicken sandwiches?). In any event, I'll be hunting down the new place and probably ordering a range of dishes. This is a new thing, of course: it'd be foolish to expect a direct re-instantiation of the previous McPherson's BBQ Pub. But, hey—as long as I can get a taste of Joe's Bama-style food, I'm there.