Don't be stupid
No one would ever cash out stolen coins like that directly.
You want them to go through a mixing process so it is almost impossible to tell where they came from. Else all you need to do is wait for the thieves to cash out their traded coins and get them through the traditional banking system.
Whatever this coin movement means at this stage you can't really tell what is happening. If those sums get thinned down enough to blend into a mixing service and that is being started then i'd start to get worried.
What's the saying here: Sell the rumor buy the news?
Allegedly stolen coins, stolen only for someone who believes Karpeles. Given his history of lying, I don't.
And yes, they could get tumbled before being sent to other exchanges, and will be almost impossible to track.
Usually I don't have bitcoin dreams, but I took a nap and dreamed of MtGox allowing withdrawals again, but strangely the price was close to 100$.
This could only happen several months from now, or soon if 180k Gox coins will be dumped on other exchanges.