Try throwing a putt after you jumped. You will see that in order to have any type of pattern of flight, it will be released prior to leaving the ground.
Also the definition of a putt is:
Any throw from 10 meters or less as measured from the rear of the marker disc to the base of the target.
Putting: Any throw from within 10 meters of the target, as measured from the rear of the marker disc to the base of the target, is a putt. Supporting point contact closer to the target than the rear edge of the marker disc after the disc has been released is a stance violation. The player must demonstrate full control of balance before advancing toward the target.
Again though go try and throw a disc while in Mid-Air, the chances are probably about 5% that you will get any type of energy behind it. You need to have that foot planted on the release which is what happens almost always. Thus the 5% rule...could you call it....probably, but video evidence is NOT allowed at this point, so it is very subjective as to the ruling of a stance violation on a jump putt.