Nevermind, this report has to be fabricated bullshit. There's no way that's true, or if it is, than the MtGox boys just made the history books for one of the biggest heists ever recorded.
How do you not notice approx $375 million slowly go missing over the years? You'd think after around the $50 million mark your balance sheets would be a bit off compared to what your reserves are, and you'd catch on.
So either a) report is fabricated bullshit, b) MtGox boys are beyond stupid and incompetent, or c) MtGox boys had one hell of a good time over the past few years, and are going to enjoy a nice retirement.
Seems like this would all be traceable in the Blockchain, no?
https://blockchain.info