Where did you get that impression? I'm pretty sure they did actually make a specific rule change for that event.
from Chuck Kennedy himself.
Victor, there's no rule change. Feldberg was just illustrating how the rule should be followed.
As Feldberg points out, "jump putts" have never been allowed but "putt jumps" have been, meaning that the player must release the disc before jumping or stepping forward for lies beyond 10m. Inside 10m you have to place your non-plant foot on the ground with proper balance before moving forward after releasing the putt if it wasn't already on the ground (like a straddle putt). Where and when your disc has landed during a putt has no bearing on making legal movements, unlike some who think you can't move forward until the disc stops moving.