If my Espathra with the activated "Stance" Ability protection is moved to or from my Bench during my opponent's turn by a switching action such as Boss's Orders is it no longer protected?
It is still protected. It is an effect from an Ability, not from an attack, and so is not removed by moving to or from the bench.
Source: Paradox Rift FAQ; TPCi Rules Team (2023-11-02)

Relevant cards

Note: All applicable cards may not be listed below.
SV4_81
SV4_81