At Cor-Kinetic one of our foundational concepts is that of the relationship between stability and mobility.
Stability is a component part of mobility. The body needs to move in a mobile AND stable manner. Stability without mobility is RIGIDITY. Rather than a sign of functionality of the system I would see it more as a sign of dysfunction. The inability of our motor system to effectively control movement will create a rigidity in the system as the body chooses stability over mobility and closes down the system's ability to move.