Thank you, Fitz. That's interesting - I wasn't aware that...

Thank you, Fitz. That's interesting - I wasn't aware that brokers - during high volatility - take such action to protect themselves (by increasing spreads).

Also a correction to my previous post -

From the sketchy details I managed to garner via google, I think the move in the USD was a lot more contained (it might have only been a 200 pip swing in the end, during 9/11) - sounds like the powers that be jumped in to support the USD - whereas the Yen took a real dive around the Fukushima disaster.