Add me to the list of those who have spun their Miatas. Unfortunately I did it in front of Robyn, just after waving at her (she was waiting to turn onto the road I just came out of). The guy in the pickup behind her was laughing so hard I could hear him the 1/8 mile I was away. In my case it was due to the injudicious use of the throttle. I do plan on removing my rear sway when I get home to see if that helps the tail-happiness I have seen during autocrossing.