One theory that is being floated on Reddit runs like this:
Kleiman is Satoshi, and had the keys to the ~1 million bitcoins. He dies, and his USB stick/computer/whatever went to a relative, who doesn't realize what he is holding. Wright knew Kleiman and knew he was Satoshi. So he invents this crazy story about being Satoshi, but that he can't spend the coins because they are all in a trust that was held by Kleiman.
So now Wright comes public claiming to be Satoshi - and sets himself up to launch a lawsuit against Kleiman's relative to get "his" bitcoins back. If Wright pulls this off, he gains the fabled treasure of 1 million bitcoins off Kleiman's estate.
Thoughts pro and con?
this is mostly the truth. wright may have been never ever involved into Bitcoin until the dead of David Alan Kleiman. and now wright knows nobody can say anything against his crazy stories because satoshi is gone.