Crowley would definitely sympathize if his other person was on land (after all, Crowley wouldn't leave anywhere without Aziraphale). At the same time, he would probably try to fight back cause he wants out.

Crowley is a demon with reality-bending properties (also nerfed). I don't know if he could stop a kinetic, but maybe he could try to frighten him? He's been known in canon to make images so frightening that people promptly pass out. Is that something that you might want to try? Or just see if they could fight each other with their powers?