I predict a huge ether dumb in 23 days, 22 days, 21 days, counting...

So let's imagine the ethereum miners decide to accept the hard fork.
At some specific point in time [somebody more technical please fill in] all the ether in The DAO will be released back to the original backers. Right?
I am just guessing here [wink], but I can imagine that at least a few of those will want to get rid of their recovered ether as soon as possible. At ~14% of all available ether, even a small fraction of that will be a huge dump and a great opportunity for shorting ether still more .

Or is my logic here at fault? I am not a trader and this is certainly NOT investment advice.