Access 10 formatting questions

If he is the admin and has passwords to everything, I would resort to the obvious - screenshots, cameraphone pics, and such. Remark your code in the modules. Set the properties of the database ("created by", "date", "version", etc) - not that he can't change all that stuff, but then you have him really going through work to make it his own.

And if that's something you have to worry about, you have my sympathies.