ok, I see the scenario has been rewritten,
2 options.
1. prussik down. rig a pulley (biner) run a sling threw it, attach to both parties. use this as a counterweight to take weight of his prusik and descender. remove prusik and descender. Secure him to you. attache your own descender, take the weight and remove pulley system. Descend. Its a little more complex but simply put.
2. Rig a z-pulley system and lift him out.
As mentioned earlier, time is important. Also carry a eburp (or whatever its called) |