Just to clarify since misinformation runs high here...
Lactic Acid is a by product of anaerobic metabolism, this happens when the muscles produce great amount of force in a very short time without oxygen. Ski racing is largely an anaerobic event therefore the build up of lactic acid is quite normal.
It has nothing to do with holding a static position (isometric contraction) and it does not get "flushed" away. lactic acid is either absorbed by the circulatory system raising the pH and giving you the sensation of throwing up, or transformed back to pyruvate by oxidation if there is enough oxygen available.
I agree that anaerobic metabolism is one cause (and already said that). I think if you do more research you will find that the build up in the muscle being used happens quicker if that muscle is tense all the time and it is my understanding that working the muscle at least helps get some of the lactic acid out of that muscle where it had been causing a burning or aching sensation (precisely because the tense muscle inhibited the blood flow necessary to remove it from the muscle).
nice try, but no. I did a year worth of college research on lactate levels in skiers as a sport physiology requirement. You on the other hand got your info "from the reading i did about lactic acid when on the Quad Burn thread."
Lactate in the blood is metabolized in the liver, so the muscle pump effect that you advocate does not clear it from your system, nor reduces it's production.
The only way to minimize its effects on the muscles is to provide enough oxygen so that it can be converted back to pyruvate within the cell, or be in an aerobic phase.
Since ski racing is mostly anerobic (mix of Type II fibers) energy is generated through use of existing ATP reserves, Creatine Phosphate, and glycolysis. It's the fiber used in combination with local hypoxia that generate high amounts of lactate not the type of contraction.
That is why you should do cool down runs so that you can bring oxygen to the tissues maintaining an elevated blood flow, which also help extracting excess lactated so that it can be metabolized in the liver.