SWTOR - Sith Warrior Class quest ending

The final duel against Darth Baras, its been leading up to this for a ery long time, and finally the duel has come. We have been hunting down, basicly everybody Darth baras know, we have killed his spies, killed his apprentice ( twice ) and we even freed the entity that he was controlling. ..but now that the final duel has come and we have been granted an audiance with the council, there is only one question left. Will we suceed in killing our former master? *Spoiler Alert* This is h