I did. Right next to me.
The aggressor in it was stood in a disabled bay. A lady in a wheelchair returned for the second half and he refused to move standing in her way. Both she and her carer made him aware they'd returned for the second half. He still refused to budge until a steward came along had a friendly word, received a hug (strange), then the lady was able to continue watching the game.
He took exception at comments made by our fans telling him how wrong and out of order he was for refusing to move from in front of a disabled lady who just clearly wanted to watch the game!
He immediately junped up on to the raised area grabbing the fan by the cuff of his jacket, he acted in self defence to avoid being punched. Surprised his friends either side didnt seem to help.
Stewards very slow at responding, and we're almost not going to throw the idiot fan out! Think he was eventually escorted out after still acting the idiot coming for the fan in the top tier a second time and Beibg verbally abusive when the stewards were around him.
Was really unnecessary, from standing in front of a wheelchair bound lady in the first instance to thinking being challenged was harsh. Was clearly put for only one thing and after he didn't get the reaction he wanted from a carer (that's low enough!), he went looking elsewhere for it.