However, it is well known by most of us that some of the price difference in exchanges is due to ease/difficulty in getting USD in or out. For instance. BTC-e was always typically lower, and I'm sure the difficulty in getting USD in partly contributed to the imbalance on the buy side. And Bitfloor was INCREDIBLY easy, one simply had to walk into
Right now, we might be seeing a very slight buy/sell imbalance at Gox due to the Dwolla freeze.
But since the Gox price is used the most as reference, due to the liquidity, Department of Homeland Security's actions potentially (depending on if you believe there is an imbalance) caused the price of BTC in the most-referenced market to rise. And even if people are selling on other exchanges - it won't offset the increase because people on other exchanges have an interesting tendency to look to the Gox price for reference and confirmation of trend analysis. Gox price pulls other exchanges, rather than vice versa. Very interesting situation we have.
Noobs were wrong. I was right. What else is new?
Oh, don't forget that Gox is usually higher than the other exchanges anyways. So maybe we're just reading into this a bit too much, folks