I don´t think you should have to report it, but sure you can. It doens´t matter wether you are involved or not. You can report all situations of players breaking rules. But I think if this is the most dangerous situation you had, you are going well. Do you were in Duisburg? This is what breaking rules and reckless driving means. I don´t think you have to report such a little rule breaking and think about the situation when you were distracted as the player who caused this and sb will report you because of one time you did a mistake. You don´t want to be reported in this case. And the Admins and Support-Team do a great job, but I think they already have enough to do.