I had a chat with gattonero regarding this situation. Just as you said in your appeal, you got hit by a car, and then you Prop Pushed it. We see no point in removing this Punishment as it is, in fact, valid. Next time, you should put more effort into your appeal and actually be apologetic for what you have done.
Also, simply make an F1 request and patiently wait for a staff member to handle it, instead of rulebreaking and getting yourself in such a problem!