Man I hope there's a brace across his back, because a human's arms are not strong enough to overcome that much resistance.
But it there were a sturdy brace, that looks like almost enough resistance to keep him from dying, if he can keep from tumbling. Which he probably can't.
Yeah, that guy's best outcome is a lot of broken bones.
I think the acceleration may be an issue too. It's hard enough to do when you're still, but it may be harder when you're plummeting and trying to slow down.