Sounds to me like a bull s*%t story if you ask me. I don't hear any rattle at all. Things could be a little loose around the base of the rotor. I would just go through and tighten the bolts. Wiggle it around by hand, it shouldn't be moving at all. Then check the calipers and make sure that the bolts holding the caliper aren't coming loose. I have made it a habit when cleaning my bike to check all of the bolts that I come across just to make sure that the high revving and vibration didn't break any of them loose. I lost one from my hugger that way.
-Cops want a hot pursuit, so entertain them! -Shadee
-Cops want a hot pursuit, so entertain them! -Shadee