An adjustment of this order of magnitude will inevitably impact on the rand, but it is not clear whether under these circumstances the rand would find itself moving with the dollar, or in the opposite direction. Much will depend on how world growth and risk perceptions are affected in such a scenario.
Whether or not there will be an orderly or disorderly unwinding of these imbalances, there is very little that some economies such as South Africa can do to pre-empt these effects.