pl-security-patcher.php

<?php
/*
Plugin Name: PageLines Security Patcher
Description: Blocks the recent exploits for legacy themes in the event you cant update the themes.
Version: 1.0
Author: PageLines
*/
class Fix_Pagelines_Legacy {

  function __construct() {
    add_action( 'after_setup_theme', array( $this, 'sanitize' ) );
  }

  function sanitize() {
    if( ! current_user_can( 'edit_themes' ) ) {
      remove_all_actions( 'wp_ajax_pagelines_ajax_save_option' );
      remove_action( 'admin_init', 'pagelines_register_settings', 5 );
    }
  }
}
new Fix_Pagelines_Legacy;

This code breaks Pagelines for multisite where a normal administrator does not have the 'edit_themes' capability. Instead the capability should instead be 'edit_theme_options' which administrators possess on both single and multisite instances.