Justin was focused on making his way through the unfamiliar environment -- or was it too familiar. One never knew with these things.
Rook's elemental hulk-out gave the Manikin pause, however. He didn't have that level of proficiency with his Contracts - yet - and there was a part of him that wasn't sure if he wanted to be that good at it. The other part of him that was Machine had a detachment to it all and responded with assigning the phenomenon to another mental file in favor of meeting an immediate priority.