The field judge (seen in the video casually walking forward) clearly thought the play was dead, even though it had not been called. You are correct, along with everyone else, that they did not break any rules. They just sort of bent them technically to their favor. These are the kind of plays that end up getting rules made specifically for them. If you aren't facing an opponent who is ready to counter you then it is not a sport in my book. "Fair" or not.