Excellent video, thanks guys

Can anyone explain the significant mechanical effects at work here?

My hypothesis is: The CD is in resonance at its 5th eigenmode and the framerate it is filmed by makes it appear to be a stationary warp.

The plastic cd has imperfections in it which weaken it's surface. If you spin it faster than it's meant to go, the stresses become too much and the cd will shatter.

The motor in your cd drive won't spin that fast, and is specially balanced to keep the cd from warping as it spins. The dyson motor has different tolerances for balancing and causes the cd to rotate and wobble at the same time. As the speed picks up the wobble increases. From the fast movement we also have air currants crated. All this combines to put forces on the cd in different places. The rotational force from the spin. A force from the wobble at a certain angle to the plane of rotation and the air turbulence.

When these forces build up too much, the cd will fail at one of the imperfections. The rotational force will rip the cd from side to side. As the material is fairly rigid - it doesn't stretch - it just shatters into small bits.

Do you know what this proves absolutely. It proves that after over seventy years of design and improvement it is still the crappy plastic parts of a vacuum cleaner that pack in not the motor.

The Eigenmode oscillations are caused by the non constant torque of the motor.
If they had used a constant torque motor the disc would have spun to much higher speeds.
Adding a flywheel to the shaft would have dampened down the varying torque.