this is how i got it to work for me..
the first time i went in i put away my weapons with out any fuss, and it bugged up.. like it did for you all.
so i loaded the save game out in the snow before the droid fight and redid all that... then quicksaved... i went inside and the maiden tells me to drop my weapons.
say.. who are you ?
maiden says she will not warn me again, old woman tells me i best do as she says..
say.. ill play along for now
now if it works, it should goto a scien where they are all in cells and are haveing a conversation, and its rather long...
then you talk to atria or whatever her name is, and get to a part where you persuade her... then finish up talking quickly
now goto the room where the 3 cells are, as soon as you walk in it should trigger a scien .. go through that and use the text to let them out
this will get your party back...
now talk to handmaiden...
then find T3 unit, and let him out by useing text, tell him to go back to the ship
you can stick around or leave now and everything should be in order
i hope this helps you.