It would be great if this module implemented the Token API to update an imagefield hooks with the proper path to the cropped image.

I couldn't figure out how to do it generically, but I did figure out how to do it for a single field (with the machine name "field_articleimage") in the "article" content type. I placed the following code into a custom module:

function techwell_stories_tokens_alter(array &$replacements, array $context) {
  $options = $context['options'];

  if (isset($options['language'])) {
    $url_options['language'] = $options['language'];
    $language_code = $options['language']->language;
  }
  else {
    $language_code = NULL;
  }
  $sanitize = !empty($options['sanitize']);

  if ($context['type'] == 'node' && !empty($context['data']['node'])) {
    $node = $context['data']['node'];
    if ($node->type == 'article') {
      // Alter the [node:field_articleimage] token, and replace it with the proper path
      // from the imagefield_crop module when viewing the full node.
      if (isset($context['tokens']['field_articleimage']) && ($context['options']['view_mode'] == 'full')) {
        $items = field_get_items('node', $node, 'field_articleimage');
        $replacements[$context['tokens']['field_articleimage']] = file_create_url($items[0]['uri']);
      }
    }
  }
}

It works for me, but use at your own risk.

-mike