It was actually for an expired ID that he had. It was not accepted as valid ID at the airport if it's expires. he got into an argument with the supervisor, he called security, Mike accidentally bumped one of the security guys and they called the police. No big deal really.
It's amazing that such an unknown person (other than in the world of bodybuilding) can get noticed like that. It's no big deal what happened. It's even more amazing that someone will write a thread about it.
The whole story is on getbig.com