I have found out that Russia has recently purchased a large amount of over 25 tons of silver, this may have something to do with it. However, there is clearly some manipulation in the market. I speculate that this drop is going to be pretty minor and not amount to much.
Here's an article: http://moneymorning.com/2012/04/06/the-who-how-and-why-behind-silver-price-manipulation/