I have to make a withdrawal from bitstamp, about 200 bitcoins. I have about 400 bitcoins on there in total.
Pro tip: If you have at least twice as many BTCs in your BitStamp wallet as you need to withdraw, put in a withdraw request now to a local wallet (e.g., Bitcoin-Qt), and within minutes you'll know if it is instant or delayed. Maybe start out with like 15 BTC and then work your way up until you have all that you need withdrawn. Then once they are in your own local wallet you have the control over sending them at your convenience.
In a worst-case scenario where your withdrawal gets queued, then I believe BITSTAMP has redeemable codes (coupons they call them), which you could probably do a trade. You send someone a BITSTAMP redeemable code, and they send to you bitcoins. The person redeeming your coupon gets the BTCs credited right away and you get the BTCs from the person you did the deal with.
Of course, you would only want to do this with a trusted counterparty, presuming you are asked to send first. Since there are no fees for the redemable codes (coupons), using an escrow is both easy and affordable for something like this.