Actually Geoff, the video to which I’m referring is a different one. It is entitled "The effect of ground vibration on audio systems", and was taped in a private space (maybe at the Townshend facilities?). It starts with Max discussing the problem, then moving on to possible solutions.
He is shown standing behind a table (and in front of a projector screen, used in his presentation), on top of which he demonstrates different forms of "mass on spring" isolation. He demonstrates the differences between spikes, a plain spring, and his Seismic Pod (which contains the same spring). He covers the issue of the undamped movement of the plain spring vs. the damped behaviour of the Pod.