I have never liked the Groupwise integrations, as it is too intrusive.
We typically install without it here.

well, we have one user with it installed. True to form, user does not
like it. How can I make it go away? Uninstalling and reinstalling the
client without Office Integrations simply breaks Excel, with any attempt
to save a file complaining about a missing GW addin file. I can't
figure out how to get Excel to let go of the notion that it needs this file.

We run office 2003 if that makes a difference...