Bret takes stuff personal. WM 9 Hogan told Bret he would return the favor. Of course, the Hulkster later changed his mind. Vince told Bret Hogan agreed to drop the belt to Bret, but Hogan said he never said that. Vince then brought them both in to his office and told Bret something like "that's what you heard, but that's not what I said......"
Bret should have known Vince was a liar at this point, but seems to blame Hogan more than Vince for this issue. Hulk was just being Hulk, Bret was just being Bret, and Vince was just being Vince.