I would be thinking the same way, but you need to ground yourself with the fact that he admitted to running from cops, seems like he wasn't, well for lack of a better way to put this, mature enough to ride...I say to myself,what if I didnt go out there and talk to them kids,maybe it all wouldn't have happened...
So, I have a feeling that outcome would have met him eventually; just incredibly sad that you feel so involved and that your son saw it all happen too...
It takes a lot to go out and ride after something like that; just take your time and when you're ready, you'll know...