That would require every court reporter, lawyer, bailiff, officer, and every other person in the room to keep quiet. There are literally dozens of people involved with oral arguments most of whim have no skin in the game and no reason to lie.
Or he was in on a sting. It's too easy otherwise.
No. It's a quote they're referencing in which the original probably used the word he. That's how you cite it without losing context Seriously, how do you not know this?