The Web Components is a prerequite role for the Web Conferencing conponent, so that is why it is grayed-out in the
Deactivate menu. You'll need to deactivate the Web Conferencing service first, then you can deactivate the Web Components. You can then uninstall each component, and reinstall/reactivate.
This document shows the proper order of deactivation/removal of ther components:
http://technet.microsoft.com/en-us/library/dd572243(office.13).aspx
Jeff Schertz, PointBridge | MVP | MCITP: Enterprise Messaging | MCTS: OCS