Yeah, my rule #1 for any custom move is "do not present false choices." This includes any option that kills you outright: "you do not get crushed by a boulder," "you do not splatter on the canyon floor," etc. If you want to continue playing, you must choose to not die. Therefore it's not really a choice at all.
The same concept applies to every dead-end option. If you make a disguise move and one of the 7-9 choices is "your disguise does not fail," you're basically forcing them to take it. Instead, think of what can go wrong and make the player choose exactly which thing goes wrong. You want an array; if one option is clearly the best then it's not an "option," it should just be written into the move: "your disguise doesn't fail, but..."