Hear Ye, Hear Ye!
It looks like we may have fixed the Edmund's Racer bug once and for all. Sadly I don't think this will fix those who are currently stuck in it, but it means that no one who gets that quest in the future will be stuck, there. For those who are currently blocked at "Enjoy the Race", we should be able to bump you past it within the next few days.
P.S. If any of you have a character that is at, (or shortly before) this quest, please give it a try and let me know if it works for you.