Loaded Commerce Community

hi,
i am almost done setting up my first creloaded site, and want to make sure that my client will not use the site for his other businesses without paying me for all the custom work (graphics, layout, etc) and configuration i did.

what i'd like to do is create a page (or more) that has a simple unix command that will erase the contents of the template i created as well as drop the database tables that i added on top of the standard installation.

my problem is this: if i just create a page that has these commands and put them in the root or template folder, i'm afraid that any future hacker may actually find it and use it against this current site. if i password protect it, it won't do any good if they clone the site to a new server. and if i put the password in the database itself, then it may be discovered by whomever would clone the site.

does anyone have any suggestions/examples of how to accomplish my goal?

i dont know flash that well, but i was thinking that maybe i can do it in flash/swish and embed these commands only if i access the file directly in the images directory and enter a user/pass. this way every site he may install this on has this back door that i can use in the event he does not pay me my usage fee according to our contract.