It can be deactivated, but it will go back after using a relic, going into another instance, planet etc.
It might have been fixed now, but I had to cover up the face of my shadow just because I didn't want to see ***** rubbed all over her face. As a miraluka it's really annoying.
Best part about dark jedi is that some choices won't make you do extra stuff on quests. It's like: "Give me your money or die!" I love it! No goody two shoes having to do stuff, because people walk all over you and command you to do even more than asked.