Life is full of bumps on the road. Sometimes it's just a speeder accident, sometimes you get sliced in half by a Jedi (and not even a Master at that). But there is still hope. Here is how you can fix your Sith reputation.
#1 Find new legs (no, not these creepy spider legs)
#2 Find your next padawan and show them the dark side
#3 Journey to the nearest Sith temple