If the warforge's face could droop in surprise and fear... it would have as Alexia unsheathes her sword.
"Oh my.... well. I can see that my services will not be required here. I suppose it would be best if I were to leave." the warforged says, taking a few steps backwards towards the front door, his eyes sweeping the room once more, obviously taking note at the many different kinds of people...the many, rough, tough-looking adventurer-types and his eyes squint angrily.
Dropping the bag on the floor, the warforged grabs the cleaning machine and dashes over to the pedestal, grabbing at the sphere underneath the cloth covering. "But not before I get THIS!!" Grabbing the whole lot, he presses a button on the cleaning machine and POOF... he glows green and remains where he is. "What the!?" He presses the button a few more times in frustration, his glow increasing in brightness.
All of a sudden, the warforged winks out of existence. From the north, you can hear a screaming curse as the warforged reappears fifty feet to the north and begins tumbling towards the Cogs below. After a few moments, you no longer hear his screams. Looking over to the pedestal, you notice that the fake gem and cloth covering are no longer there, teleported away with the warforged.