Players characters evading direct questions

[Batcathat]

Yeah, I mean that's the thing isn't it. We're back to trust. If the players don't trust the DM they won't engage in a Guy Richie Planning Montage with the DM present because they'll assume anything they do say in it will be used to make their plans fail.

On one hand, that's an understandable reaction. On the other hand... well, why would someone play at all if they don't trust the GM not to actively try to screw them like that?