Looks to me he would have crashed anyway. The bike had already compressed the front forks before the sand bags. The rear was leaving the ground and then he hits the bags. One could argue hitting the bag may have saved his life. If he had gotten to the gully he may have broken his neck.
Gotta blame someone these days because noting can be "your" fault, always has to be someone's else's fault. Little Johnny can't be at fault and he wants a participation trophy to boot.