I spoke with Sunpath and their rigs were TSO with and without an RSL. With this in mind you do not need additional paperwork to have a Master Rigger Remove the RSL. I have worked on a few of the early rigs which do not now or have not ever had an RSL installed. How ever all the new rigs come with an RSL
If your read the letter it also states that the jumper can unsnap the RSL So the jumper can get on an aircraft with it installed on the rig but not hooked up.