I don't think it was deliberate, the twitch after the hit looks more like he was braking from speed which would cause a twitch like that and the victim was still walking into the track which was a dirt track as well. What the feck was he doing walking on to the track like he had to know he was putting his life at risk.
People on that corner are saying they heard him hit the accelerator which caused him to fish tail into him. He was on course to go around the corner normally like everyone else was.