That rule is funny though, because from what I understand you must only demonstrate balance. In fact in the disc golf fundamentals dvd I have with Dave Feldberg and Ken Climo. Feldberg advises that immediately after releasing the putt begin walking towards the cage. I guess that would be a way to mask any forward momentum or loss of balance and stay within the rules.
good point i like the idea. but i guess it would only work if you sink every putt.