I would investigate why your DC is falling over, as it seems that is causing the initial problems. afaik, once the permissions have been applied, they should persists, but since your DC is falling over, I can't really say what the expected outcome is. You may want to take a look at logs to see if it requires DC to be available to keep the roles/etc.
In any case, if you need to quickly redeploy the rules using vim-cmd, take a look a this blog post - http://www.virtuallyghetto.com/2011/02/automating-active-directory-user.html
These permisisons should be stored under /etc/vmware/hostd/authorization.xml, so you technically could just backup this file and restore if needed. You'll probably have to either restart hostd process or the host for the changes to take effect