To remove the Intrust server from the Intrust Organization manually, run the following:
1. Open SQL Query Analyzer.
2. Select your Intrust SQL Server and Specify SA account, then Press OK.
3. Select "Intrust_Cfg_DB" database from the drop down list.
4. In the Query window, run the following query against the Intrust Configuration Database:
DELETE FROM [ADCSERVER] WHERE [NAME]='Intrust_Server_Name'
This will remove the server from the Intrust Organization.