Switching your feet to cut of the ring more effectively.

[Dia bando]

Switching Stances to me is a situational offensive strategy, but can be counter productive defensively.

In other words:

Since Offense is active and defense is reactive, switching stances could enhance offense and inhibit defense.

There was a guy used to do that what was his name, I remember Marvin Hagler if I recall
he was not to bad a fighter was he.!