User Profiles & User Information List Question: Deleting Users

In 2007, we have a forms based authentication setup which checks the users last login date (inactive user) and deletes their ID from our database and site information list.

In 2010, we're moving to a Claims Based SAML system which doesn't use FBA.

We'd like to delete the user based on their last login date which is a custom property we've added to their profile in the user profile service. When I delete the user's profile, and the User Profile to SharePoint Syncronization timer job runs, the users are not removed from the site user information lists.

Is there anyway to have users deleted from mutiple SharePoint sites when their profile is deleted from the profile service?