It turned out to be fake. The website originally referred to is now offline, and yes Craig Wright was proven to be an elaborate hoaxer. More recently, the @satoshi on twitter was also discredited, and his P2P Foundation profile is still hacked. Now you're up to date!
Ive never seen proof of his p2p foundation account being hacked. Just speculation.
I don't know how the P2P Foundation login process works exactly but what is known is that his
satoshin@gmx.com was hacked (or recycled), and if he used that to sign up then he probably could have requested a password reset.
https://bitcointalk.org/index.php?topic=775174.0