I think the problem with your otherwise fine move Talek is the trigger. Its mechanical. You need to embed it within the fiction so you can acknowledge the descriptive cue of the move.
Your custom move revolves around the idea that the trap exists yeah? There is nothing in the move to dissuade this assumption. So perhaps its more about the player indulging in their thief's ability to author cool trap stuff:
When you discover an unknown trap, roll plus DEX.
On a 10+, Choose three, on a 7-9 choose one:
*You cleverly disarm the trigger mechanism, what is it? It cannot be reset. Do tell how you go about it.
*You perceptively determine the Trap's Type, choose: Pit, Poison, Blade, Missle, Water, Crush, Magical, Ensnare
*You narrowly avoid the trap's Danger as determined by its type
*You don't bring unwanted attention to yourself