Here's a 'most simple' script to zero the rotations on the currently selected/active prop or figure, which may be of use.
# Zero the rotation of the currently selected prop or figure in Poser. Works in P11 or P12.
import poser
scene = poser.Scene()
actor = scene.CurrentActor()
actor.ParameterByCode(poser.kParmCodeXROT).SetValue(0.0)
actor.ParameterByCode(poser.kParmCodeYROT).SetValue(0.0)
actor.ParameterByCode(poser.kParmCodeZROT).SetValue(0.0)
# Redraw the OpenGL Preview viewport in Poser, so we can see what's been done.
scene.DrawAll()
Learn the Secrets of Poser 11 and Line-art Filters.