Thanks Artie. I must have been having a brain freeze because I've used this method before to delete unneeded language files. I booted into my clone on an external HD. Navigated back to the file, moved it too the Trash and emptied the Trash and it was gone.
Had the same problem with that widget on my clone, it would not empty and kept getting the same 'file in use' message. Rebooted into my internal HD, and then deleted the widget on my clone.
There are so many of these little tricks it is hard to keep them all in the front of your mind when something goes wrong.
