Jedimaster.NET was the premiere site featuring the Star Wars Kid, getting over 100,000 visitors a day. There's no doubt that George knew about that site and did nothing about it.
I've had this .COM for several months now. It doesn't feature any star wars content. That plus the term "jedi master" not being trademarked bodes well for me (although I'm no trademark expert and I could have this all wrong).
I wouldnt rush to get rid of it either.
If you get contacted, ok, but iotherwise, its a great name.
Now, the problem is what do you do with it in term of developing til then?
Or maybe set up a PPC site?