Go back to the very beginning, near the entrance there is a door leading to the left of the statue, you can lockpick it, find the star stone beyond and that'll cure your party of the rot, after that head up the stairs in the back there to talk to the immaculate douche-bag about completing the trial.
You can also glitch the teleporter pyramids through the blue shields.
omg thanks for the idea's. I will try this when I get off work

and no when my characters stand on the plates they don't click.