I'm watching this Youtube video of the Holyfield-Tyson I post fight review. Over and over Tyson is asked by Steve Albert questions, and over and over his answer is "I don't remember because I was disoriented from headbutts." He said that in the press conference he was about to address the media as if he was the one who had knocked Holyfield out.
http://www.youtube.com/watch?v=FVXW05n8HzQ