Why don’t you add a function to the theme installer to remove the “Buy our Bundle”adds that pop up all over the admin area? once the Premium Theme is registered with the right Key, for example, those adds stop to appear.
this would save you a lot of time if you have to intervene into every customer’s installation and remove or change theme code.
I had the same problem and filed a ticket and asked you to show me how to remove them, but instead you asked for an admin account and you stepped in personally and deleted the ads. now i changed the theme and the ads are back again.