The only thing you can do is to obfuscate html and css, this way the ripped html is useless.
I had similar situation few days ago and I wrote about that on forum. I had luck to find his website because it has the same name as his profile name and I contacted him that way.
Unfortunately I didn’t find anything relevant when searching his username on google also his profile page is blank and it doesn’t have the contact form.
Can you contact him? If you can ask him what is the problem. Maybe he will change it when you help him and maybe the problem is because he didn’t read documentation or something. But if he insist on customization then I’m afraid you don’t have chance. You can try to ask support for removing but that is not likely they will do that.
Funny thing is that there is no contact form on his profile page and he didn’t contact me in any other way.
Today I received this review http://imgur.com/fwYocG9 I’m not sure that this user is just a noob or he is blackmailing me with the 1 star rating to customize the theme for him.
How can we get rid of these ratings? can we also have a flag rating for review option like we have for forum and comments posts?
I was looking on my items referrals and found a warez forum where a user posted a link with the latest update of my theme and I immediately remembered that exact unique username that asked support questions a while ago, is there any way we can stop such users so that they can’t spread our latest updates to our themes?
You can use git directly http://git-scm.com/ this is the tool that github is built on, also there are tools like https://code.google.com/p/tortoisegit/wiki/Screenshots that integrate into windows shell, more gui clients like http://windows.github.com/ here http://git-scm.com/downloads/guis