Active Workspace can be turned off for some users without unsetting ActiveWorkspaceHosting.NX.URL or ActiveWorkspaceHosting.URL.
SolutionStarting in NX1926, there is a Customer Default to shut of NX embedded ActiveWorkspace AW.
1. File-->Utilities-->Customer Defaults.
2. Expand 'Teamcenter Integration' and highlight 'General'.
3. Select the 'Active Workspace' tab.
You can choose the Hosting location
To turn it off set to "None"
4. Restart NX
5. Resource Bar is no longer available to the user