On this project, the client ALWAYS wants the results soted by 'random'. Therefore we don't really need a sort filter.
So, is there a way of coding this functionality directly into the main Toolset system (Function.php file?), and then we can ditch the Sorting Filter from the Content template?
Rather than add a front-end sorting control, you can just set the order required in the settings for the View.
Be sure to select the View block (use the block navigation at the top of the page if required) and then you should find the sorting options in the sidebar (see screenshot).
And don't forget to delete the front-end sorting control from the View.