If I set the hideRouteList option on DirectionsRenderer I still get the route 
selection UI in the target div:

    var rendererOptions = {
        hideRouteList: true
    };
    var dirRenderer = new 
google.maps.DirectionsRenderer(rendererOptions);  
    dirRenderer.setPanel(document.getElementById('dir-container'));
    dirRenderer.setDirections(dirResult);

You can find an example here:

http://www.cannonade.net/geo.php?test=geo27

Am I missing something here?

Thanks.