What's the point of the jump? Not being a dick, I genuinely don't know what it's supposed to accomplish/prove/test.
A little history lesson:
This was one of the original proposed methods of emergency escape for the Mercury space program, but NASA thought it was to difficult to test and didn't pursue it. From orbit, technically you could use an inflatable heat shield, then jettison and freefall if this works.
That being said, I think this guy is trying it just to break the record. Captain Kirk said it best while climbing El Capitan: "Why do you climb a mountain? Because its there."