How to de-install a meta-package *cleanly*?

Example:
I want to remove glite-UI (or any other glite meta package for that matter) completely with *all* the files it installed

Preferably even *only* the files it installed extra (by issueing the install_node .... command) - and not the files that were already on the node (and on which the packages in the meta package also depend on)

Grtz,
      Serge