McKee and Cobb were both slated to compete for the MFC lightweight title at MFC 32: Bitter Rivals on Jan. 27, but both fighters came in over the contract weight at the official weigh-in - defending champ McKee by seven pounds and challenger Cobb by one-half pound.
"I was thoroughly disgusted by the lack of professionalism that Antonio McKee showed towards the belt he was scheduled to defend as well as the Maximum Fighting Championship as a organization," said MFC Owner/President Mark Pavelich.
"It was unacceptable behavior for a champion to demonstrate. On top of that, Antonio never really apologized for missing weight that badly. That was the end of things for him with the MFC. That's why he was stripped of his belt immediately and told that he would never fight in the MFC again. I hope it's a message to all the other fighters in the MFC."
"It's disappointing to have to release Brian as he is a tremendous character person," added Pavelich. "Everyone in the MFC has a great deal of respect and admiration for Brian, but unfortunately he admitted to making an error in preparing for the weigh-in and was over the limit. For a title fight that is a big mistake."
Haddad, who lost via decision to Dan Ring at MFC 32, was over by two pounds for his lightweight bout.