Does anyone know why my character keeps dying when removing the neck with RequiresNeck set to false?

i was testing with a VR system and when i tryed to remove the neck so i can track the players head with out the torso following it and when i tryed to remove it my character just dies does anyone know why

this is the script

I think ‘requires neck’ might be just for rigs that don’t have a neck joint.
If there is a Weld (Motor6D) at the neck and you break that joint your character dies.