Happened to me when I was testing out my new FMIC. i was doing about 95mph and "POOOOF", car stalled, I coasted to emergency lane and the piping was just hangin' out. serves me right for not using t-bolt clamps.
So i was out in the garage, working on the koni inserts. I had my cutting wheel going, sparks flying..it seazed up on me and kicked back. the cutting wheel frayed up at the edges & left a nice big crack in the wheel. looks like i'll be up late tomo.