Remove Lync 2010 system from AD (with orphaned servers)

1., Remove the following Groups from Active Directory :

CSAdministrator
CSArchivingAdministrator
CSHelpDesk
CSLocationAdministrator
CSResponseGroupAdministrator
CSServerAdministrator
CSUserAdministrator
CSViewOnlyAdministrator
CSVoiceAdministrator
RTCComponentUniversalServices
RTCHSUniversalServices
RTCProxyUniversalServices
RTCSBAUniversalServices
RTCUniversalConfigReplicator
RTCUniversalGlobalReadOnlyGroup
RTCUniversalGlobalWriteGroup
RTCUniversalReadOnlyAdmins
RTCUniversalSBATechnicians
RTCUniversalServerAdmins
RTCUniversalServerReadOnlyGroup
RTCUniversalUserAdmins
RTCUniversalUserReadOnlyGroup

2., Run ADSIEDIT and connect to the Configuration naming context.  Browse down to Configuration -> Services -> RTC Service and then delete the entire RTC Service container.

3., Also delete the Computer object(s) for any Lync Server you had previously installed.

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