Sadly, no. The reason it happens is kind of interesting though.Hi, this mod is really cool, the only nitpick I have is that when I change my character's stance, her limbs rotate for a second when entering and exiting a vehicle, is there any way to fix that?
The "Stance" Items were made using a system called "Fat_Bones". This system is used in the Plastic Surgeon. When you make your character fatter, their limbs will be moved outwards so they don't clip through the body. Fat_Bones can also be assigned to specific clothing Items through modding.
Fat_Bones gets disabled when entering a Vehicle, so the hands stay aligned with the steering wheel, and no limbs clip outside of the car.
Volition never had any intention for this system to allow negative values to move the limbs closer. So for the "Narrow" Stance Item in M2M, instead of saying "Move the limbs -5 degrees inwards towards the body." I had to say "Move the limbs +355 degrees outwards from the body." (effectively moving them around an almost complete rotation).
So when Fat_Bones get disabled when entering a Vehicle, the limbs have to travel all the way back around -355 degrees to their default position.
This issue doesn't occur with the "Wide" Stance Item, because those Fat_Bones values are only +5 degrees, and so they only have to travel -5 degrees to get back to the default position.