If you think this through....with the Halt, they keep the door shut on any new walk-downs AND they force the enemies to show all their cards, which it looks like they've done (with this last sorry and hilarious piece of video due diligence).
Once ALL your adversaries have shown you their their weak hands and they can't leave the table, show them and everyone else, your beautiful hand...and the rest is history. They will never play with you again.
Game theory 101, but would be a brilliant move.