Disable TinyMCE image resizing on Media images in WYSIWYG

Hi,

After some time of debugging I'm not able to find out other way than make chages in theme_image function so I'm reporting this issue.

I'm using media module and it's functionality to add an image directly in wysiwig editor (Full HTML) of body text.
I added image in this way and I try to change it's size by taking corner of the image by mouse. The image is then nicely resized. After saving the change the image markup is saved to DB. But when I want to see it in normal display mode on my webpage then the image preserves in its original size.

I've found that markup is correctly parsed and passed to theme_image function. The info about new size (the size that I've changed by mouse) is passed in attributes array (nested array of $variables). And the theem_image function works so that all information about size is replaced by the original size of image.

For my purpose I rewrote the method theme_image like this:

function theme_image($variables) {
  $attributes = $variables['attributes'];
  $attributes['src'] = file_create_url($variables['path']);
  foreach (array('width', 'height', 'alt', 'title') as $key) {
    // adding check of existence $key in attributes array
    if (empty($attributes[$key]) && isset($variables[$key])) {
      $attributes[$key] = $variables[$key];
    }
  }
  return '<img' . drupal_attributes($attributes) . ' />';
}

I don't know the whole context of theme_image callings so in case that my issues is not real, please be so kind and close it. Thanks.