It’s NOT a t-trade peeps ... IMO the MM didn’t shut off the trades at the bell fast enough and some poor bid wacker soul lost money while the MMs were pulling the higher Bids off and they got filled on a lower one. Serves them right for Bid wacking too.
I was watching L2 like a hawk eye when it happened. When it got filled that was top Bid. Even though bell rung they filled it. I would be calling my broker whoever it was though.