My immediate reactions were:
Why isn't the student fighting back? He had plenty of opportunity to engage and brutally defend himself. Maybe, he is just a new student.
Women can be useless. Your man is being beaten up, and all you can do is stand there and watch. A female lioness would have devoured a gang of hyenas attacking the males of her pride.
BJJ doesn't work in street fights. That coach could have had his head smashed through the concrete going for those submissions. I see UFC fighters doing slams inside the Octagon, and the only reason the BJJ guys survive is because of the padding. In a street fight, even if you completed the submission, I think you will need to get checked out for a epidural hematoma. It is a silent killer from blunt force trauma.
Moral of the story. Brutally defend yourself at all times. You don't owe any unprovoked attacker a fair one. Get a woman who will actually do something positive in a life and death situation. If you can help it, never grapple or go to the ground with an attacker. Stay on your feet and keep your distance.
