Remove Terminal Server from domain

We have a client with a SBS2011 (the DC) box and a 2012 terminal Server (just a member).  we are decommissioning the SBS2011 box but keeping the terminal server for the time being.  is it possible for us to remove the TS from the domain, add it to a workgroup and use local user accounts for people to login with?  the Remote licensing is installed on the terminal server itself.  the logins are just managed via the SBS box.
CRL ltdAsked:
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Radhakrishnan RSenior Technical LeadCommented:

You need to disjoin the terminal server before you decommission the DC.
David Johnson, CD, MVPRetiredCommented:
Remote Desktop Services requires a domain in order to be in a supported configuration.
If you continue is a good article to get you started.  Also User CALS are not supported so you need to use Device CALS

It is also a real pain to administer
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