No, they really did get hacked- or at least someone leaked their accounts. Find yourself here:

redacted

Then, someone started cracking the MD5 password hashes and then, with passwords in hand, trying various accounts until they found one with lots of money. There is a $1000 per day withdrawl limit, so in order to get more bitcoins out, they had to crash the market close to 0 first. And that is what happened today.

The End.