The soldier waves you through; those at the door don't have a problem with it.
You're inside the warehouse! First, you pass through a makeshift coatcheck room, where a few particularly muscle-bound soldiers are collecting weapons and checking people out. They let you pass through without problem, though; your uniform is in order.
Once inside, you are greeted with something reminiscent of the Club Hel scene from The Matrix Revolutions- the warehouse has been sound-proofed and boarded up in order to keep the sound of the massive party within from being heard. In the center of the warehouse is a great dance floor, with lights and sparks flashing about and fog clouding the floor. Around the edges are people seated at heavy marble tables. Overlooking it all is a man hosting it... the Malik of Luon, the leader of the Syndicate (portrayed by Lambert Wilson, he looks just like the Merovingian).
You cannot properly see from here, but there does seem to be a fair few Syndicate thugs hanging out on the balcony with him.
As you make your way into the warehouse, you spot Medraud and Medraut, the thief twins, sitting around a hookah with a few others and receiving massages from Twi'lek girls. They appear to be relaxing, and in the time since you last saw them, they've grown suave little mustaches to go with their outrageous 70's sideburns.
Hmm, I guess I wouldn't last long if I fought them right now. What about a duel, does my knowledge through savoir faire tell me that duels are practiced here?
Otherwise I guess the only feasible option is trying to get the Malik to surrender, though I don't want to have another three years to spend in servitude. Hmm, perhaps if I slyly assasinate one of them if he goes to the bathroom, though I can't quite see how I will get the artifact back that way, that seems to be the main problem anyways.
You do not think that thieves are very honorable.
Indeed, getting the Votive of Light back from the Malik is your objective here. Bringing down the Syndicate would be nice, but you lack any official backing here. You have simply been gathering evidence for Clarion and the Investigative Force since you are not officially part of their detective agency.
Con cannot make arrests. Assassinations are also not very Jedi-like.