Jesus Christ.
Have you EVER looked in User Permissions in the CP? Ever look up a user's permissions? Set a user's permissions? Suspend a user? Delete a member?
Helluva lot easier getting the password in User Permissions than opening a file on the server.
Did it ever occur to the user (or yourself) to have the UBB send his "lost password" to him?
I still find it hard to believe someone who "owns" a Version 5 UBB doesn't know this.