I wonder if both chutes failed or if there was simply not enough time for the reserve to open.
"Schindler's back-up parachute also apparently failed to open." Hard to say from the info given, but I know what you mean, I once saw a guy bounce, he had trouble operating his capewells due to the heavy gloves he was wearing...near zero degrees that day. He finally cut away and his reserve was just about to inflate when the ground suddenly appeared.
A successful cut-away from the primary...but the water below was way too shallow as it turned out...luckily the chest mounted reserve prevented me from entering the water in a standing position and I was able to walk away...the luckiest moment of my jumping career.