Mike
I am impressed with your perspective.
I have a basic theme concerrning the silver market: The Chinese will always have a significant interest as being a large holder of the metal throughout their history. When the silver price spirals higher they do hedge selling against their massive holdings. The $16 area and above looks to be the area that they have closed out their hedges. It wouldn't be surprising if they have recently begun adding to their hoard in the $16 to $17 range.
I, too, witnessed this outstanding relative strength day for silver against gold. It looked to me at the time that an important buyer messed with the pounding paper shorts that day.
I also believe that sometime in the future China's currency will be 100% backed by silver and it will replace the US dollar as the world's reserve currency.