To set the distance order by, I've set the ordering section to order by the lat-long field ASC with Distance from "fixed" source.
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Then to set the fixed distance as your current posts lat-long value, I've added the following filter to "Custom Code" section offered by Toolset:
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add_filter( 'wpv_view_settings', 'func_set_distance_orderby_address', 10, 2 );
function func_set_distance_orderby_address( $view_settings, $view_id ) {
if ( $view_id == 88 ) {
global $post;
$view_settings['distance_order']['center'] = get_post_meta($post->ID,'wpcf-post-lat-long',true);
}
return $view_settings;
}