Verrik scoffs at Stanley, "Did we or did we not come here to get rich or die trying? I thought we were pretty well on the same page about that. Problem with tying yourself off to the chain is the hallway is longer than the fall down the shaft, so a rope ain't gonna do much for whoever is down there poking around that angry looking face. Annndd I guess we know who that's gonna be. Right. So. We aren't going to figure this out from here. You guys got a minute or two to tie off if you want." The rogue creeps off down the corridor toward the face to get a better idea of what is going on while searching for triggers, arcane or otherwise.
Perception + Trapfinding: 1d20 + 4 + 1 ⇒ (16) + 4 + 1 = 21
Disable Device + Trapfinding: 1d20 + 7 + 1 ⇒ (8) + 7 + 1 = 16
I'm gonna just take on Verrik for now so we stop staring at rogue challenges helplessly :P