To bad so many of the model api functions are not documented.
But there is a function that sounds interesting.
# PlayerModel:RefreshCamera() - This function is not yet documented
# PlayerModel:RefreshUnit() - Updates the model's appearance to match that of its unit. Used in the default UI's inspect window when the player's target changes (changing the model to match the "new appearance" of the unit "target") or when the UNIT_MODEL_CHANGED event fires for the inspected unit (updating the model's appearance to reflect changes in the unit's equipment or shapeshift form).
More:
http://wowprogramming.com/docs/widgets/PlayerModel