I just read old interview about this, from the czech bb mag.
Here is the story:
It was in 1992, when he was world champion. It was in the club where I was working as a bouncer, he came to me from the back and slapped my head from the back, I turned around to confront the attacker because this is how you deal with such situations when you do this job. It was not only Tyson standing agaist me but also his 20 friends. So it wasnt really a good situation. Flex and Rico were with me so they saw what what happend, but at the end nothing happend. Mike admitted that he should not have done it and apologize.