Get attachments (get_posts) and WP 3.5 new uploader

I’m using get_posts() to get attachments from the post and use it in the slider. The issue is new uploader doesn’t have that “Gallery” tab which was perfectly suitable for this. It also seems to be breaking original code and you can’t remove / reorder images from this new uploader now. Is there a way to fix this?

The code is below:

        <ul class="slides">

        <?php if ( have_posts() ) : while ( have_posts() ) : the_post();    

         $args = array(

           'post_type' => 'attachment',

           'numberposts' => -1,

           'post_status' => null,

           'post_parent' => $post->ID,

           'order'=> 'ASC', 

           'orderby' => 'menu_order'

          );



          $attachments = get_posts( $args );

             if ( $attachments ) {

                foreach ( $attachments as $attachment ) {

                   echo '<li>';

                   echo wp_get_attachment_image( $attachment->ID, 'full' );

                   echo '</li>';

                  }

             }

         endwhile; endif; ?>
        </ul>
        <!-- slider ends -->