This is very sad. Over the years I have personally seen both a raced up 1911 and a 2011 gun discharge upon being dropped. Fortunately with the round impacting the berm in both cases. In both those cases the competitor was running and tripped on something on the stage, gun went flying, in one case at the Alabama sectional it was spinning...yikes.
The sport allows people to remove almost every safety device in limited and open. In the 90's and the first decade of this century my guns were missing the series 80 safety plunger (Para and Colt), had the grip safety pinned, and the trigger sear geometry and springs necessary to have a 3-3.5# trigger like everybody else. I always had a Ti firing pin and extra power firing pin spring and told myself it was enough. Not sure I was right. People have long done the same things to Glocks (Lighting strike kits, ZEV, etc. etc.) in the name of lighter triggers and performance.
The sport has evolved the last 10-15 years to include so much "track and field" I am going to say that those heavily modified guns that dispense with all the drop safety design elements are no longer compatible with safe operations.