//* Hook home newsletter widget after header
add_action( 'genesis_after_header', 'sunny_newsletter_widget', 8 );
function sunny_newsletter_widget() {

    if ( is_page_template( 'page_mytemplate.php' ) ) {
        return;
    }

    genesis_widget_area( 'newsletter-top', array(
        'before' => '<div class="newsletter-top widget-area"><div class="wrap">',
        'after' => '</div></div>',
    ) );

}