Yea I watched him a bit on the replay. He wasn't wrecking at the start. He got spun I think a few laps in then waited a lap and chose to take me out. Maybe he thought I spun him or something. Nah he left straight after that. Mustve been someone else
Unfortunately that's what really makes open servers fairly useless without MR, future fun runs probably best to just set a password to avoid such muppets.