[Opserty]

You will have to delete the template from the MASTER STYLE, you'll need to enable debug mode in order to access the MASTER STYLE then. You can do this by adding this line to your config.php file and uploading it to your server.

PHP Code:

$config['Misc']['debug'] = true; 


The just "Revert" the template you want to, in the MASTER STYLE, as usual.

Remember remove the line from the config.php file once your done!