Thank you for posting!
I agree with whoever said that Mika was feeling himself.
What this article probably wasn't saying, is that they asked Mika rudely and that they told him it was about something else. Maybe he was furious at being misled, maybe he was like, "Excuse me, I really don't feel well..." trying to get away, but they stuffed the shirt in his face... Which of course, could anger anyone... At least, that is my feeling.