Last night I sent one of my teams to inspect the Chaos Moleri. Thats all they did, pick it up, get yelled at and put it back. No switcheroo. I wanted to send them to Wilderness Clearing pre-away-camp and pet the Hogar, so I put it back. As soon as I walk into HeLi's she's all over me about the Mook and the HLL and giving me Chameleon Juice so I can sneak out of town. When I go to Z'ant and give him the flag (quest#1) hs is clueless, but Sarok says Z'ant says we have the Chaos Moleri. And I think Sarok said the away camp has been established, so Rex is toast(ed).
I have read dozens of times that events are triggered by posessing two or more of the objects. Apparently you only need to pick up the Chaos Moleri to trigger events.