Also, see https://twitter.com/lensassaman/status/77358901774917632 where Len doesn't seem to be a fan of Bitcoin. Not sure what he means by that though.
Len started posting about Bitcoin in 2010 (post Satoshi handing the project over).
It seems to me, if Len was Satoshi, he grew distant from the project. Maybe it wasn't the cypherpunk utopia he envisioned. Maybe the wikileaks and silkroad issues weren't what he wanted to enable. Perhaps he wanted to distance himself further from the project.