Kabuto took oro hand and implant to his body ...but the cells from that hand starts to get over kabuto :O (only his cells but he still should be kabuto...??). Sasuke has his soul or he dont have... if you look what he say he dont realy say that it was oro power but white snake...meyby some experiment or he gain the power from that large oro snake and oro soul just go away...but then when he was talking to kabuto he says that he dont kill oro but take over him...