I would like to go on record that if I have a choice between drowning or being miraculously saved by a fairly benign shot, shoot away! Never would have thought I would ever have reason to say that. The trick is not to need saving in the first place.
One diver up, one down might work in the future to reduce the surprise and randomness of rescue. Then again, there is nothing to say you'll be able to see your buddy at 75 ft. anyway. As a rule we are more at risk of blackout at the surface and to a lessor extent in the upper ten feet. They say the risk of blacking out falls to around 10 % deeper than that. The savior in the case is a very adept, unique free diver.
Sounds like the stuff of a made for TV segment on bizarre rescues.
The fin in question. Look at the accuracy of that shot and at distance in extremes. It might have even been moving if the diver was still in convulsions. Wonder if he would have been off even if his eyes were closed?! An amazing, once in a lifetime, we hope for the victim, shot! It is very lucky the divers fin fit was such that it wasn't yanked off. So many fortunate events in this one.
From:
http://spearboard.com/showthread.php?t=66252