×Have a rock pile block the soulless while I go fetch the mimic, then destroy the pile with mimic's pickaxe.

×have the golem step on the platform behind the soulless with some clever brained-nonbrained movement, but that just results in the golem being dropped off.
I'd ideally want to have the golem enter the platform in front of the soulless, but I can't seem to make that happen no matter what I try.

×It's fine for the rock golem to go behind the Soulless; he won't get dropped off the platform if he is immediately behind.