If the esc is adding timing, that is not "blinky" They were cheating, and the only thing you can do is make sure they have it disabled before racing starts next time. If the track owner doesn't do something about it, tell the track owner that you will not come back. If you and your friends all say you will stop going to the track if he doesn't stop them from cheating he will probably make sure they don't cheat any more. Also, let other people in the pits know that those guys are cheating.