I think the most obvious motive for a conspiracy would be just to fake insolvency (can it be proven?) and run with the Bitcoins. In that regard it would make perfect sense to 'leak' said document with the information it contains.
This too! Yep. And simpler. He starts over with a massive cache of coins.....
Perhaps it began unraveling with a few lost coins and then he decided to take what he could while he could.
All speculation, of course.