RE: How to delete colleague using IBM Connections API David Wendt 5.Jan.12 02:20 PM a Web browser Profiles 3.0.1Windows
My understanding is you have to delete the 'connection' with the colleague.
In the response entry for /atom/connection.do?connectionType=colleague&sourceUserId=....&targetUserId=... you should see a couple of link-rels.
Send the DELETE to the url identified as the 'self' link-rel.