[Laurence Payne[_2_]]

Sharp spikes are often put on the bottom of speakers to keep them from
moving when a loud bass note is hit. But then there are those
Auralex Mopads. Those would do the opposite I would think. Wouldn't
those pads make the speakers fly back and forth? These seem to be
contradictory solutions to "tighten up the bass"

Absolutely. The various "solutions" beloved of audiophools are often
self-contradictory.