He's very good at cranial (and has FCA, Fellow of the Cranial Academy). I might be able to recognize him, but haven't met him. That Biodynamics program is very heavy on embryology. Embryology also gets an emphasis in the cranial intro course; I don't know if his influence is there (in the curriculum itself) or just in all the side comments the faculty make at that course - the body heals along embryological lines, the movement of the brain with CRI follows its embryological development (so, a slight spiraling/unspiraling of the cortex), etc.
My school's OPP chair said Jealous is probably the best in the world at cranial, and gave an example where he had fixed a dysfunction in someone's back through the forehead. This followed a DO saying cranial wasn't real at all, and he had him check the back dysfunction again afterwards.