Exclude Row from sorting - Datatables.net

I have a question about how to exclude a row(tr) from sorting. I want to make something like this http://ift.tt/2edPCQ9 but I don't want to set the data of the hidden row in jQuery. I suppose that you can do it adding a class to the element and after that manage to not sort this on initializing the datatable on jQuery. Actually I have the initialization like this:

$('.ordered_table').dataTable({
        "sPaginationType": "full_numbers",
        "dom": '<"toolbar">frtip',
        "pagingType": "numbers",
        "searching": false,
        "pageLength": 20,
        columnDefs: [{
          targets:  ['datatable-nosort'],
          orderable: false,  
          bsortable: false
        }],
        "aaSorting": []
 });

The class datatable-nosort is for not sorting on columns, this is not for rows.

Thanks to everyone!