Easy to speculate, but it looks like this guy found himself on the slope shown on the far right. Looking from this angle, I imagine it would take some conscious choices to get into that position, as any hiking route to the summit would almost certainly involve the forested ridge on the left. And a fall from the shoulder of that right-most hump would almost certainly not result in a self-arrest halfway down the slope. You'd follow gravity all the way down to its runout.
So year, getting into that position looks like a Darwinian proposition, at least from this perspective.
