This is partially true. They did work an angle in Winnipeg and possibly other stops in the circuit where Hogan ran in and saved Brad Rheingans from Jerry Blackwell, which set up Blackwell vs. Hogan around the horn. Johnny V leading chants for Hogan through the mic is quite the site to see (they tried to turn Johnny too and keep him with Hogan).
My belief on that, however, is that Verne could not reconcile the idea that he could be a face without a proper, old-school turn. It was obvious he was the fan's choice long before the Rheingans thing.
I think they did the official turn more to reconcile it with themselves and possibly some of the fans that wanted specific reasons and incidents to point at as markers for turns and whatnot.
Dave was never a big fan of the AWA. Of course, the AWA had begun a downward turn shortly after he began his newsletter, so he may have felt differently if he had to comment on it before that time. Some of his 84 writings on the AWA absolutely destroy the area.
I mention this because the absence of Verne and Wally Karbo as great bookers from the piece on that is really, really noticable to me (and honestly I am assuming they booked the AWA at least up until 1984, I could be wrong).
The AWA was very good at closing the circle on a story or feud, and remembering little things that long-time fans would recognize as a big deal. that had to be Verne's doing. The AWA being so bad in the later 80's unfortunately overshadows a lot of the early stuff and the lack of video pre-1981 makes it tough to point to examples for the average old-school viewer.
It's also why showing AWA TV on WWE 24/7 without specific interview spots is useless.
I'm happy that Dave recognizes how much of a star Verne was, though. Small victory, but it's something.