Well, I think most people here imagine that the ban only affects 3rd party payment processors (deadline for this ban is April 15th, which makes sense).
However, another major exchange (FXBTC, 10x more volume than BTC38) did receive a phone call from their banks to cancel their accounts. No other exchanges received any notice from banks, only 3rd party payments processors.
More recently, Bobby Lee told Coindesk that bank transfers will also be halted. Now, for most people, this is FUD, which is why we still didn't witness a big dump on the market. Here's what he said:
“What we’re hearing is that banks will disallow us from using commercial bank accounts to store customer deposits, what’s not clear to us yet is whether the business of running a bitcoin exchange will be classed as legal or not.”
On April 4, a government paid shill made an interview saying that bank transfers will be halted. More evidence is emerging about bank cancelling their accounts with major exchanges. However, NONE OF THIS HAS BEEN ANNOUNCED, YET.
If it does happen, I expect a gigantic crash. For now, most people think it's FUD, I think it's very real. The government has good reasons to regulate Bitcoin.
OKCoin also announced that they're ready to move offshore. In any case, we need to wait for them to reveal their plans, nothing will happen otherwise
Most of the dumping until now (in the last two weeks) has been based on speculation about the ban. Nothing has happened yet.