Unable to Disassociate Host from vCenter

We recently were migrated back to our parent companies domain.
they decided to rename the server that vCenter was installed on and now it is a complete mess.
I want to uninstall vCenter and re-install on another server.  The current server is also the print server, hence the server name rename.
I found this post answered by Andrew on how to disassociate the Host from vCenter.
http://www.experts-exchange.com/questions/28330122/Uninstalling-VCenter-with-managed-hosts.html

However mine only shows this:
vSphere client StatusIf I click on it I get taken to the VMWare downloads page.
Also there is a note at the top that says the logs are stored on  non persistent storage (the old servername and domain)
configuration issuesWhat can i do?
Should i proceed with the uninstall anyway?
LVL 17
pjamAsked:
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Depends on the version of ESXi, this was implemented later.

But if you don't have the option, (which is the recommended method) maybe it's already been removed, otherwise remove from current vCenter Server, or just Add to Current vCenter Server.

Also there is a note at the top that says the logs are stored on  non persistent storage (the old servername and domain)

There is normal, when there is no persistent storage for a host.

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pjamAuthor Commented:
Andrew,
HP ESXi-5.02
vCenter is or was 5.5 in expectancy of upgrading ESXi to 5.5.  Which is scheduled for this weekend.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Just re-add to the new vCenter Server, and ignore any errors, about being managed by another!
pjamAuthor Commented:
Thanks Andrew,
Almost there.  Will reboot tonight and hopefully finish the uninstall tomorrow.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
no probs.
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