I agree that the rule book should be tweeked a bit here. Instead of demonstrating balance I would like it to say something like, "after the disc is released, the player needs to demonstrate balance by placing both feet on the ground and pausing for a count of 2" (inside 10m).
A count of 2 by who's clock?
Not entirely unrelated digression: Back in 6th grade, we played flag football in gym (that's P.E. for you young 'uns) one day. The gym teacher announced a 3-count rule before you can rush the quarterback. The count modifier had to be the name of an animal that started with the letter "A." His exact words: "I don't care if it's 'one armadillo, two armadillo, three armadillo,' or 'one aardvark, two aardvark, three aardvark,' or "one anaconda, two anaconda, three anaconda," as long as it begins with "A."
First time the ball is snapped, a kid on my team (Craig Walck) blurts out, "One ant, two ant, three ant," and flattens the quarterback before he'd even taken two steps.
The point being that
who is counting and
how they count can be more important than
how high they count.
I don't have a problem with the way the rule is currently written (IMO, stance violations in the 10-20m range are a bigger issue than falling putts), but if it is rewritten, I think it would be preferable to require the thrower to re-establish a stable stance before advancing toward the target. (BTW, anyone else see the loophole in 802.04.D?)
Of course, since the problem of demonstrating/not demonstrating balance typically only occurs on putts at or near the circle's edge, the larger question that has to be asked is, do we really want, or even need, to require a player pause for a two count or perform a specified action before cleaning out the basket on a drop-in?