Jetpack Photon with admin-ajax.php

Hi,

I’m interested if it’s possible to load Photon with admin-ajax.php
Here’s what I have:

function mfields_ajax_show_post() {
    $id = ( isset( $_GET['p'] ) ) ? (int) $_GET['p'] : false;
    query_posts( array( 'p' => $id ) );
    if ( have_posts() ) {
        while( have_posts() ) {
            the_post();
            get_template_part('content');
        }
    }
    exit;
}

add_action( 'wp_ajax_mfields_show_post', 'mfields_ajax_show_post' );
add_action( 'wp_ajax_nopriv_mfields_show_post', 'mfields_ajax_show_post' );

/wp-admin/admin-ajax.php?action=mfields_show_post&p=25 works fine but it doesn’t filter the image url through Photon.

Any help?

http://wordpress.org/plugins/jetpack/