The power that goes across the Green>Black pins that you would use for the paperclip trick are very low amperage.
http://www.youtube.com/watch?v=5FWXgQSokF4Otherwise... why would corsair advertise it as a safe way to test?
Yeah not only is it low current it is also low voltage, about 0.9V and 500mA. You have more risk of electrocution handling a AA battery without protective gear.
The trick is for what, just testing? No matter what else that wire pair does, it tells the power supply that a motherboard is connected. There is no motherboard connected to the motherboard connector when that wire pair is jumped.