[Cagey]

Misrepresenting your place of employment is NOT a minor error.

So, you wouldn't discuss this issue with the employee? Look at his past record, suggest he write an apology to the person he walked up to? Evaluate the entire episode? You'd just fire him and move on? Interesting management style you have.

[stands2reason]

If an employee of mine causes me to have to make a statement to a news story due to his rudeness, you bet your ass I'd fire him.