It goes way back and was discussed fairly widely here, and perhaps on some other boards as well. But yes it was years ago now. I don’t now recall precisely where it originated at the time. Maybe from a rivals type cite maybe from a recruits post or twitter, I honestly don’t recall.
At the time there was little argument that it happened. Rubbed a lot of people the wrong way at the time and some, including myself, felt it should exclude Key from working at Tech in the future.
I haven’t tried to find the smoking gun and I honestly don’t know how difficult, or even possible, it would be to find now.
The rumor was that he dissed Tech as an institution and it’s academics and made statements that going to Tech was a bad idea for him in hindsight.
I’m not asserting this definitely happened though I suspect it did. Thus I think it would be beneficial for him to address it one way or another.