I find that it is best to unclip 1 foot just a bit before stopping, but you do not have to stop on a dime, sometimes if not unclipped I may move forward another foot or two to get unclipped, I cannot remember being in a situation where could not stay balanced another foot or two to become unclipped, but I can come up to a stop sign stop still a few seconds before beginning to fall over. One just needs to concenstrate on what he is doing not to fall.