My Dad died and I had to leave before a game to get home , and the steward made a point of telling me no readmission before grudgingly opening the gate
Reminds me of those thick arse jobsworths at Gatwick 5 years ago questioning me why I'd booked my ticket to Atlanta so late. I said "is it illegal then". No was the reply. Still they pressed so I gave them the real reason. "My sister was still alive 2 days ago but she's not now. Happy with yourselves?"
Made a complaint whereby I told them to improve their training. Got a full apology.
As for the OP of this thread, you do sound a bit thick to go in to the stadium and out again without asking. Though how you done that I don't know.