Bret didn’t get the location moved.Is the Flair thing true? The story Meltzer has always told is that Flair had a handshake deal with Vince that if he was ever moved down the cards, then Vince would let him go back to WCW. So I believe him dropping the title to Bret and being moved off the main event precipitated him leaving, as opposed to the other way around.
Bret has a really high opinion of himself; I somewhat doubt he single handedly was able to get Vince to change the location of the second biggest PPV of the year and move it to another continent. I think the company had to decide on DC vs London, and either way Bret was dropping the belt. And I don't doubt he was pushing London.
He said as you did that the 2 locations discussed were DC and London and once London was chosen he talked Vince into letting Davey win it off him in the main event with Shawn beating Davey a month later.
On Flair he gave his 90 day notice when the company was on a European tour and Flair left in WCW in 1991 because Jim Herd wanted Flair to take a massive payout and do a stupid gladiator gimmick over his nature boy persona.
So Flair left for WWF.
When Hurd left in 1992 Flair wanted to go back and he hated how Savage-Flair wasn’t the last match at WM8 for Hogan-Justice.
Flair gave his 90 day notice late September 1992 and Vince had Flair lose the belt on a non televised show in Canada to Bret Hart.