I did not hear a “misspeak” in the original. To me it sounded like a New York “wouldn’t.” I heard something like woont, which in my experience with northerners has meant the negative of the word i.e. wouldn’t. If that is so then he “backtracked” as a ploy to elicit a reaction which he had calculated.
Or he realized it would cause an even more hysterical reaction if he had tried to explain the pronunciation.