The very last frame or two you can see someone walking up to him with some sort of device as he's over that cleared area they showed from the "fly by" when he flew past at the beginning. I'm assuming he flies up the line, toward wherever the other end of the cable is anchored, then coasts backwards down to that cleared area, which is probably the lowest point.
There is a better POV here. At the other end of the line is a tower. Friction and the uphill climb scrubs off speed. Then you roll back towards the low point and disembark. I would think the fins attached to the rider's feet (you'll see them at the very beginning of the first clip) can be used for wind resistance to help brake.
Well, after watching one of the other videos about South Africa's crime rate--50 people murdered a day and 15,000 people murdered a year, I think I'll stay in the good old United States.
I work with a woman originally from South Africa and her American husband is my boss. I'd be interested to get their opinions on whether or not things are safe over there or not. She was due to return on Friday from a two-week family vacation, and I'm sure she could give me the lowdown.
It's probably no mistake that most of her siblings and relatives live in the United States.