2) A lot of times something like this is how you form some new regulations - it's truly one of those "You know, this was excellent but we can't do it again" situations.
3) The best course forward is to leave it alone and legal in this moment, publicize it, but also treat it as the formation of some new rules.
Side note, Nascar 2005, which he referenced as one of his inspirations for this, is one of my favorite gamecube games. I remember picking it up and playing it for hours on end, the soundtrack was awesome, and it didn't feel like an EA cash-grab at the time. Man how times have changed...
Edit: Extra info - the 11 of Hamlin has previously made it into the chase for the champion ship by _intentionally wrecking drivers_ , so by and large a huge part of the fan base believes he got what was coming to him.