So far I can come up with 5 possible scenarios:

-mtgox is compromised and are covering it up.
-mtgox deliberately messing with Diablo3Ds account.
-Diablo3Ds computer/account is compromised.
-Diablo3D is posting disinformation.
-a third party is engaging in a cyberwar against bitcoin using man in the middle attacks.
/tinfoilhat mode off