It's hard to imagine a low side at 130mph? Very few 130mph turns out there, where you can spin up the rear wheel or get on the front brake too much and tuck the front. My guess is he laid it down intentionally or ran off the road then lost it and bounced.
Watch a pro road race on Speed Channel and they low side at speed quite often; in a turn the front wheel goes away (washes out) and down you go on the low side. It happened to # 40 last week at Pikes Peak in one of the 600 cc races.
Anyone that lays a bike on purpose is a fool, ya gotta keep the tires on the road to stop ~ a bike sliding down the road on it's side takes a while to stop; metal and plastic don't work half as good as rubber for slowing you down.
I've heard guys say: "I had to lay it down" if the truth be known 99% of them tried to stop just using the rear brake and the rear tire locked up and they couldn't steer into the slide fast enough and boom, down it goes. :):)