The Database Control Pro Setup Window can be used to unpublish your database. You need to have a database published to do this. It is a very similar procedure to publishing a database.
Open the Setup Window at:
Top Menu Bar, Window, Database Control Pro, Setup Window
Go to the 'Publish' tab and look for the list of published databases (the second list down). Then find the database in the list which you want to unpublish and click 'Unpublish' next to it. Enter the password which you used to publishing the database and click 'Unpublish' again.
If the password was correct a Message will be displayed to say the database has successfully been unpublished.