Remove original Thumbnail from croping windows

Hi, I realy like this plugin and I am using it in a new projetc.
I have some custom image size and use this plugin to crop my images.

I unset the original sizes that way :

function paulund_remove_default_image_sizes( $sizes) {
    unset( $sizes['thumbnail']);
    unset( $sizes['medium']);
    unset( $sizes['large']);

    return $sizes;
}
add_filter('intermediate_image_sizes_advanced', 'paulund_remove_default_image_sizes');

I have a custom post that dosen’t support thumbnails and i even removed the theme support for thumbnails
remove_theme_support( 'post-thumbnails' );

The sizes medium and large are not showing are not showing in the crop editor which is what i wat but the thumbnail size sitill showing.

how could i get around that?

thanks

http://wordpress.org/plugins/manual-image-crop/