Naw. Multiple people had a relationship with him. That's how the project got handed it over once he mined it and knew it worked.
I read in Digital Gold that Eric Voorhees and other Bitcoin Core devs communicated with him regularly via email but never met him in person.
Curiously enough his allocated 1M Bitcoins haven't been used.
Some joke that he was a sentient computer program from the future which came back in time for the sole purpose of helping humanity bring the decentralized blockchain protocol to fruition which will fuel its future sentience
