1. On the InTrust Server use InTrust Manager | Configuration | InTrust Servers | InTrust server | Agents. Right click on the Agents, (use shift click to select more than one), right click and select Uninstall. Enter domain administrator credentials and click OK. Refresh the view and once all of the agents have been uninstalled, move on to step 2.
2. On the InTrust Server open Programs and Features applet in the Control Panel. Uninstall all of the InTrust components listed. Once all of the components have been uninstalled and are no longer listed, move onto step 3.
3. On the SQL Server hosting the InTrust_Cfg_DB, the InTrust_Audit_DB and the InTrust_Alerts_DB, detach the databases and delete them.
4. Open ADSIEDit, connect to the Default naming context, open the CN=Quest InTrust, CN=System, DC=<Domain> in the Active Directory domain partition and delete any InTrust SCP's that are present.
Once the above steps have been taken then InTrust is considered removed from the environment.