As she said, we may never truly know the real answer, but there may be a little more merit in the spinning anti-clockwise in the Southern Hemisphere than was given.
Now, as a person living in the Northern part of the world, I cannot speak from experience and it is not extremely important to my practice. (Unless I visit Australia or something..) BUT...I feel like we must present both sides and then do testing so that we can find out the truth of the matter. So, here is the result of my recent research.
In the article, it is admitted that the Coriolis effect is active on atmospheric and oceanic bodies. The water draining down the sink is a bad example, as she stated. But, if it affects such subtle bodies as water and air, is it possible that it could also affect the most subtle energy (prana, aether, or whatever name you choose).
From study and observation, it is more clear that the spinning motion creates a vortex. Just about any spinning motion seems to create a vortex which is simply a rotation of fluid (air, water, etc.) around a vertical axis. We, the spinner are the vertical axis. (http://en.wikipedia.org/wiki/Vorticity and http://en.wikipedia.org/wiki/Vortex )
The most important discovery that I realized is the fact that the Earth itself creates vortices at its poles due to its spin. (http://en.wikipedia.org/wiki/Polar_vortex). The poles spin in different directions. Many of the planets in our solar system have polar vortices as well.
So, if the very Earth and planetary bodies create vortices in the atmosphere that spin in opposite directions, it could be possible that people in the Northern and Southern Hemispheres should spin in opposite directions.
Consider this, Peter Kelder and Colonel Bradford were both in the North and dealt with students in the North. When the book was written, there was probably no idea that the work would spread like it has. What if his strict instructions were for his students in the Northern Hemisphere.
The article also referenced the Tibetan and Indian tradition of Pradakshina. These traditions are also found in the Northern Hemisphere and the instructions are for students of these traditions that are located in the North as well.
The argument seems to be asking about the Coriolis effect on the human body. I think we are looking at the wrong place. We should be looking at the its effect on the aether, which is more subtle, and which is the source that we are attempting to tap into.
If the Earth spin affects the air's spin, I would have to propose that it affects the spin of the more subtle aether.
To bring down the aether (or prana) into our vortex, we spin in the direction of "negative vorticity". In the North, that means a clockwise spin. In the South, that means a counter-clockwise spin.
"When the vorticity vector points upward into the atmosphere, vorticity is positive; when it points downward into the earth it is negative." http://en.wikipedia.org/wiki/Vorticity#Atmospheric_sciences
Again, this is just a more researched argument for the anti-clockwise viewpoint. It is just a theory, but a healthy alternative viewpoint should encourage further experimentation.
Since we are in the North, it would be hard to conduct such experiments, but maybe Carolinda could have some of her students volunteer to experiment with the anti-clockwise direction. It would be better to get people new to the Rites so that switching directions won't have a subjective effect on them.
Hopefully such experiments will provide us with the answers that we need.
Ralph White and Ralph White, Jr., better known as "Lil Ralph."