Dude, you're using open-source software that people spent man-years developing and you tweaked an existing WordPress template. How much did you pay for the priviledge of using these? How many cease-and-desist letters did you get?
Now you want to get a lawyer to shut down a kid who likes your code enough to rip it? Trust me, he's probably learned enough from stealing your code to make his own when he gets bored with this design.
Grow up!