I few things I'm bit confused with. First of all, does the webwork server need to be running openldap? I was following through the steps on the page you suggested and #8 seems to suggest this. However I thought that didn't need to be running to access the AD server.
Also, It appears that our ldap server is not running securely. Although I know of security problems, do you know if that would be causing access problems? I have put in ldap:// protocol instead of ldaps:// in the configuration files.