Yeah this, not that I can actually do the trick but spinning frontside allows a rider to throw their feet, and therefore the deck, outwards in the direction of their toes (frontside) without having to turn their head/shoulders. This means they can complete a frontside 180 without actually rotating their body. So if a rider has trouble rotating their body frontside beyond 360 degrees (like me), they can use this to get that extra 180 without needing to rotate their body, therefore completing the 540. This foot throwing technique is why manual to frontside 180s are so easy and do not require any where near as much turning/carving as a manual to backside 180. Same of course with a late fronstide 180, as a rider can simply hop straight up, pause in the air, then throw their feet out as previously described. However this foot throwing technique does not work with backside rotation, trust me I have tried. I honestly hope this is what Jordan was talking about, otherwise I am gonna look incredibly stupid.