I can make all of the above scenerios not apply. Was racing my 63 Plymouth Max wedge car in 65 when I missed the 2-3 shift ( at the time I was running a hemi 4-spd )and had a major clutch explosion. Took out the bell-housing ( oil pan fell down on to the center link ), most of the flywheel, Brake line ( single master in 63 ), blew out the right front tire, took out the guys windshield I was racing with ( we were side by side when it blew). Coasted through the lights at 78 mph. Fortunately, the track I was at ( US30 in Indiana )had a long shut down area with lots of tall grass on ether side. Got the car stopped just as the ambulance pulled along side. I stepped out unscratched. Car wasn't so lucky. I was supprised at how many clutch springs were sitting on top of my cross-ram manifold. It wasn't pretty.