I assume from your first post you have openfire installed on OS X Server 10.4.x.  Is that correct?  I will investigate tonigt on my Mac  how to do this. If that is the case.

That will definitely remove it.  Check your logs on the server for any trace errors related to Openfire after you reboot.  There may be failed attempts to start the Openfire server if it was configured to start at boot.  The error logs will tell you what to remove. 

iChat server is fairly good server.  I came from an environment where we used a lot of Mac desktops and servers.  Had lots of fun integrating existing OS X servers into a ne AD server environment.