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This is interesting because does not being on the open road and in a race environment have a difference. This is next level but they endanger each other constantly during a race. Take other sports like F1, a lot of the accidents are caused by negligence but they are not arrested afterwards.
Having said all that this is more like cutting someones brake cables rather a 'racing' incident.
Seriously though, he pulled someone else's front brake at 130 mph with plenty of video evidence. If the other guy had gone over the front of the bike and died it would be manslaughter for sure. You can see how close the other guy was to going into a speed wobble.
What he did must be/should be a crime.