I could do this by directly referencing the DOM, so this is just a check to see if there is a best practise way of reloading a LeftAndMain page on demand. I seem to remember a LeftAndMain::ForceReload method in 2.4 but it doesn't appear to be in 3.1.

Quite simply, I have a button on a form with a click event tied to it in JS. It does not call the form action the button sits in.

$('#Form_UserAssistSession_action_endUserAssistSession').unbind('click').live('click', function(){

        	var form = $('#Form_UserAssistSession');
            
            $.ajax({
            	url : 'admin/user-assist/endUserAssistSession',
	            data : form.formToArray(),
	            dataType : "json",
	            success : function(json) {
	                
	            	if(json.response == true) {		            	
		            	// Refresh main content panel
	            		
	            	} else if(json.response == false) {
	            		// Something happened - display error on screen
	            	}
	            	
	            },
	            error : function(json) {
	            	console.log(json);
	            }
	        });

            // Return false so no server-side form is processed.
            return false;
        });

What I want to do is refresh the main panel of LeftAndMain (a form) at the end of this function.

success : function(json) { 
    
       if(json.response == true) {           
          // Refresh main content panel 
          form.removeClass('changed'); // to stop "are you sure" js message
          $('.cms-container').entwine('ss').reloadCurrentPanel();           
       } else if(json.response == false) { 
          // Something happened - display error on screen 
       } 
        
},