Soooo...when do we start assuming MintPal, or someone else, has lost or stolen all DRK held at MintPal and so we start driving DRK price up because there are a million fewer DRK all a sudden?
You mean: "When do we start to fear that somebody is about to dump huge amounts of several altcoins on other exchanges for BTC (and/or fiat directly in case of LTC and DRK) and continue to dump BTC for fiat?"
Well, I officially did (start to worry, not to believe that it is happening already, just worry...).
But I had a bad feeling about BTC prices and mintpal before it all started (I withdrawn everything from mintpal and Kraken, so I won't loose or panic-sell the coins).