That doesn't make sense to me either. Can you give me an example so I discover your point?
As Ps get more stressed, they start to show negative J characteristics, like being stubborn to a ridiculous extent, but the reason to believe so has no evidence, as a J would insist on, all they have supporting it is internal judgment. The rigidity isn't helping them... they get more into self-preservation, but they can't balance it adequately as a normal J would. That sort of thing.
-Carefully taking sips from the Fire Hose of Knowledge