Why can't Lync 2013 clients can't sign in to Lync after starting the legacy decommissioning process?

I am working with our network department to decommission our OC server.  We received a few errors in the 3 step of the process and have not removed the BackCompatSite.   First question, is this a problem, being part way through the decommissioning process?  The steps are below.  We are at Step 3.

1. Move conference directories
2. Update DNS SRV records
3. Decommissioning servers and pools
4. Remove BackCompatSite

While decommissioning the server and pools, we received the following error:
 See pic 9-18-2014 3-26-51 PM

We verified that are user has the Include inheritable permissions from this object's parent check box is selected.  

Also since discontinuing the decommissioning process any user who hasn’t logged in before can’t login (new users/previous users who didn’t install the new software).  They receive one of the following errors:
See Lync error pics x 3
                                                                                                         
We checked these settings and ours is internal so we aren't registered anywhere for domain name.  I followed the below instructions I found on Microsoft's site, but they did not apply.

Update DNS settings

If your organization has a custom domain, this procedure is a possible fix for the following error message: Server is temporarily unavailable.
Contact your domain name registrar for information on how to add the following CNAME record to your domain:
DNS record type: CNAME
Name: sip
Value/Destination: sipdir.online.microsoft.com



Any advice would be greatly appreciated.
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jfahernAsked:
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jfahernAuthor Commented:
So I think we figured out how to get them signed in.  Deleted the sign in address and then selected sign in and entered password.  The user gets signed in and after a restart it signs in automatically.  

But my other question about the OC server errors is still not resolved.
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jfahernAuthor Commented:
Another item to note: after rebooting the OC server, the server roles were removed even though an error was displayed.
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jfahernAuthor Commented:
Resolved on own.
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