So what happened with his title match with Bret at Summerslam?
Depends on who you believe.
To you, me, possibly every fan in the world and more importantly, to Bret, it made sense to have that match, under the assumption that Hogan was finished after Summerslam.
But, to Hogan, he wasn't going to be finished at Summerslam. His plan was to win the title for a 5th time at Summerslam and go from there.
IIRC, WWE had already sent posters to Japan, hyping Bret/Hogan at Summerslam. Again, under the assumption Hogan was going to be finished. And that, technically, would have been right.
Problem is, in order for that to happen, Hogan had to be champion from April to August, while he was on hiatus shooting his TV show. And even worse, he didn't want to drop the title at Summerslam. And more importantly, probably didn't want to put Bret over.
Regardless, Hogan's plan was to "drop" the title at KOTR. He didn't want to put Yokozuna over clean. Vince's retort and in a way to please Hogan, was to do away with the controversial finish, drop the title at KOTR, go back to Hollywood, come back in August, likely win the belt and possibly, put Bret over in the end in his "farewell" match. That would have still made sense because he's still "passing the torch".
But for whatever reason, Hogan didn't want to do none of that and decided to stay off TV and leave in August, which kind of makes you think that since Hogan worked FEW house shows and still left in August, the plan actually was for him to drop the belt to Bret at Summerslam, doing away with the KOTR match with Yokozuna. But since he didn't want to do business, drop the belt to Yokozuna and a still rather controversial finish and kick rocks.
I understand Bret's frustration over that but I also understand Hogan not going for any of it because it was their way of phasing him out of a company that, as of December 1992, he had no intention of returning to in the first place.