One more thing. Masks theory is free of association to clubs/quadras/any specific type groups. It just links a problem with a relation to mask. What DarkAngelFireWolf69 & labcoat seem to do is go by clubs - i.e. non-ST type doing ST-like-stuff will adopt a mask of an ST type. In effect, INTj in the example puts on a Mirage mask, whereas INTp a Semi-dual mask. By smilexian theory, it should be a Kindred and Business mask, respectively. However, is there a link between different club context and how a problem is seen? For example, as far as NT types' reactions go, INTj and ENTj being leading T types might react to ST situation differently, perceiving it as a different "problem", and putting on the same relation mask as INTp or ENTp (leading N) would do in an NF context.

The question of whether it's the only possible scenario remains crucial, still.