Lyric discussion by Torniojaws 

Cover art for En Garde lyrics by Project Pitchfork

I think it could be interpreted as starting to doubt your previous beliefs and instead thinking with your own mind. Perhaps some idea seduced the person, but in the end the person discovers it was not based on what he originally thought it was. In the chorus, the leader of the previous belief tries to get the person back to the sphere of influence.

My Interpretation