You may have heard about the McAfee virus definition file that wrongly detects svchost.exe as a virus, causing Windows XP to no longer boot: http://vil.nai.com/vil/5958_false.htm
As the vPro Uber geek, I wanted to toss in my $.02 on how the work around could be implimented with vPro. It's actually pretty simple. Using IDE Redirection, a vPro system can be triggered to remotly boot the Remote Drive Share CD image (http://communities.intel.com/docs/DOC-4785). From there it's easy, just map a drive to vpro, copy in extra.dat and svchost.exe, and send another reboot. When the vPro system comes up, everything should be back in working order. I am working on a video to illustrate this, but I wanted to get the concept out quickly, just in case it helps.