3DKiller and TRMK Staff have confirmed the Sub-Zero Head Rip Fatality movements that were posted on the Usenet. He also says that if you Impersonate Sub-Zero as Shinnok and try to do the Fatality he will do Quan Chi's Fatality and not Sub's Fatality. Also thanks to MR_ for re-confirming this for us today and Tragic for simplifing it down.

Sub Zero's Head Rip Fatality: Hold (BL+RN) F - B - F - D - HP (close)