Given the bipolar meltdown he just had, I really, really doubt a 777 type rating was ever truly in his future.
Bipolars often make plans well beyond sense or their means to accomplish. It's quite likely every last detail was severely embellished.
If you look at some of the posts he made (public!), you'll find he claims landings when he doesn't touch the controls, and bragged about a "letter from NASA" (i.e., he filed an ASRS). This is entirely normal for a bipolar on his "up" phase, as is the subsequent drama when he went "down."
It's quite sad. His condition may be treated with medication -- and it appears he's reached the point where he will reach out -- and he will live a more or less normal life when the disorder is under control. But his SI is going to be really painful.
And Facebook is forever. Ouch, that's gonna hurt.