How do you switch IDs when using ID Vault and Shared Login?

As an admin I routinely need to switch to backup copies of user IDs for security purposes (unencrypt emails for legal discovery purposes) or troubleshooting. How can I continue to do this if we are usig shared login and ID Vault. This also comes into play for a crashed hard drive which requires a machine rebuild from our desktop team.

Subject: Use the Auditor role in the Notes ID vault

Check out the section titled "What do I do if I need an ID file to access encrypted content? " in this N/D wiki article:

http://www-10.lotus.com/ldd/dominowiki.nsf/dx/id-vault-miscellaneous-administration-faq