I agree that the jeeper was a jerk, he should have let the bike pass.
My biggest problem with the idea of damaging the jeepers vehicle is; you are in the bush, possibly no law for miles, he could be armed and even if not armed, do you have the skills to engage in a road warrior type duel with a pissed off jeeper? Think carefully. Like I said before, I spend a lot of time driving in the bush (for work) and people that purposely roost other vehicles when they pass them have been known to get fucked up by their victims. The severity varies.
Besides that, it seems kind of chickenshit to me to spitefully damage someones car in retaliation for being inconvenienced. Especially if you are sure that you won't be confronted by your victim. Yeah, chickenshit.