I can't. 

😂

a few second before the fall there's a guy in front of the one who fell who is creeping right to left and is plausibly just level with the wheel of the guy who fell. It look like he just came across him, maybe made worse by going right to left himself in a definite overlapping path with the guy directly in front of the cam who ran into the guy who fell. But yeah, impossible to tell for sure, but that's my guess, the person in front crossed his wheel and he couldn't escape left or he'd cross someone else's.

Looks to me like the guy two in front (the one with the badly torn jersey yelling f*** afterwards) crashed into his teammate who was in front of him. Touched tires maybe, but took out his teammate too.

there may have been someone in front of him. A few seconds before there's someone going right to left and who kinda of lines up perfectly and remains obstructed for view. That dude is still there, but the stacking prevents us from seeing what happens, if that guy is involved, etc. As the fall reveals people that guy IS directly in front of the falling guy soooo... plausible crossed his front wheel? Noway to be definite from this footage, but that's usually how it goes right?

no, he didn't cause the pile up. very hard to tell in the video, but if you look at 14:32 you will see there is a rider slightly ahead and to the right in the peloton. as things sped up, he tried to close a gap but died, and in his exhaustion he just sort of blindly swept to the left taking out Andrew (f-bomb guy) and everyone else. I was to that rider's right and saw it out of the corner of my eye. when your heart rate is peaked and someone crashes into you, there's a tendency to swear, grandma.

It's a coping thing for some people. That or his wife told him not to crash or he's done racing.

Looks like more pissed. Maybe his bike is crazy expensive.