Depositing a simplification on a tile must give you a debuff "Marked for Death". To remove this debuff just drop the simplification on the tile, once that is done, let you down (without waiting the tile disappears) then teleport up with the transposer. It is a strat Nightmare continues in HM and NM, maybe this is a bug, or simply a remastering of the overall strat (it adds fun). Now people the hardest raids were prepared, even in NM. This is the new generation.