When there's 20 seconds or so until the next race, enter a food resteraunt and keep buying food until you get teleported to Grove Street for the next race. The food menu will still be on the screen and you will still be able to buy food. Now, wait until the next race's countdown has started. You'll still have the menu and will be able to purchase food, however now, if you buy a couple of meals and then exit the food window, you'll be able to drive around freely. It's pretty important that this is fixed, because although it would be hard to figure out, it's still possible. If you need any more details, just server/forum PM me.