I'm currently busy stealing the artwork for the upcoming official wallet and giving my masternode tools suite a new paintjob...  

Just disable darksend, move all your DRK into a new address, then go to Help>Debug window>Console and type listaddressgroupings - copy the address with all your DRK in it, then type dumpprivkey <paste address> and it'll spit out the privkey for that address. Copy and save it/guard it as you see fit.

To import it into another wallet, go to the console and type importprivkey <paste privkey> and wait a while, it'll import the balance of that privkey which will then no longer be available in the old wallet.

Simples. Try it out with a small amount.

The privkey is what the address is made from. If you have the privkey, the client makes the address out of it.

It's just like GPG.

This is the reason why your BTC(S) could be saved. BTCS and BTC used the same schema becasue BTCS was copypasta from BTC. If not for that, you'd have lost your coins.

Mintpal exported the privkey from BTCS wallet and imported it to the BTC wallet, it generated the exact same address, and poof, you got your coins back. This is the exact same thing.

Exact same function at work. ;-)

Well if this guys goal was to totally destroy the price it looks like he's succeeding. What an outstanding citizen.