I'm sorry for the bad summary, I'll try to explain bettere here: when player assumes an "enhanced stance" (I mean those stances you can assume by pressing "ctrl+a\d\w\s") he can't do some important actions, so he'll go back to the "normal" one.

1-In those stances, player can't equip weapons like binoculars or similar (like laser tracer exc).
2-If player is in one of those stances and equip the binoculars, the character will change his stance to the "normal one".
3-Switching weapon cannot be done in those positions.
4-Taking objects cannot be done in those positions