Loop output for custom plugin [solution found]

The Solution to my problem is to simply let my plugins output run through the do_shortcode()-Function of WordPress as pointed out by this article: Using Shortcodes Everywhere

I updated my plugin so it uses shortcodes, too, so now my output looks like this:

// Add this upon plugin initialization
add_shortcode( 'dosomethingawesome', array( &$this, 'output_callback') );

/**
 * Plugins output
 *
 * Fetches the output from handle_callback() and then runs it through the
 * do_shortcode() function to work with other plugins, too
 *
 * @uses do_shortcode()
 * @access public
 * @return string
 */
// {{{ output_callback()
public function output_callback() {
  $sOutput = $this->handle_callback(); //returns the string of my plugins action
  return do_shortcode($sOutput);
}
// }}}