Bulk disassociate contacts from Campaign

Since a contact may be associated to multiple campaigns, and we have a need to disassociate about 200 contacts from a particular campaign, what is the best way to do this? I suppose we could:

1. Retrieve all associated contacts (say it's 1,000)
2. Delete the campaign
3. Remove the 200 from the 1,000
4. Recreate the campaign
5. Import the remaining 800 into the newly-created campaign.

Has anyone else achieved this in a different more elegant manner?

Thanks,

Mike