I tried to copy the link but the jest of the story is that mortgage bankers are getting margin calls on their loan portfolio because the fed making massive mortgage purchases is creating volatility with mortgage interest rates and this is affecting the interest rate swaps the mortgage bankers purchased. It almost seems like it is the reverse of the credit default swap crisis we saw in 2008 but this time it is the person paying the premium that is in trouble rather than the person who sold the swap to them. There are going to be a lot of crazy unintended consequences we will likely see out of all of this.