You mean like a mission climber?????@anonesumcane thanks for sharing your story and pics. I've had a few "struggles" with the LWHC, but no complete failures like you experienced. My backup plan is a length of webbing which I could tie into an aider to hang off (in combination with LB) to relieve tension from tether. I've practiced this not really enough.
But I continue to love the LWHC method, it's so efficient.
Posts like this illustrate the need for a commercial offering for a LWHC-type platform purpose built for this technique.