Adjust users balance when deleting a log entry

/**
 * Log Entry Intercept
 * Will deduct the points from a users account before the entry
 * is deleted from the log.
 * @version 1.1
 */
add_action( 'wp_ajax_mycred-delete-log-entry', 'mycred_pro_delete_entry_ajax', 0 );
function mycred_pro_delete_entry_ajax() {

    // Security
    check_ajax_referer( 'mycred-delete-log-entry', 'token' );

    global $wpdb, $mycred;

    if ( ! isset( $mycred->log_table ) )
        $mycred = mycred();

    // Get the log entry
    $entry = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$mycred->log_table} WHERE id = %d;", $_POST['row'] ) );

    if ( isset( $entry->id ) ) {

        $mycred = mycred( $entry->ctype );

        // Deduct if user gained points
        if ( $entry->creds > 0 )
            $entry->creds = 0 - $entry->creds;

        // Add if user lost points
        else
            $entry->creds = abs( $entry->creds );

        // Adjust the users balance
        $mycred->update_users_balance( $entry->user_id, $entry->creds, $entry->ctype );

    }

}