Cool article, I didn't know about the cold-water thing.
On the topic of natural stresses, I have a friend of mine that is an outdoor grower.
He told me that if you wanted to stress a plant into turning "male" (producing pollen), that you could start it from seed in a fiber pot, then set the pot outside and let the tap root dive down into the ground, when it came time to stress the plant he would move the plant (pot and all), breaking off the tap root. According to him, this will force a hermie and produce pollen naturally without the use of chemicals.
I have no personal experience with this, just passing it along.
Cheers,
WillieP