Well, judging from what I read briefly contained in the links you provided, it doesn't seem to attack AV. According to this it appends to all .exe & .scr files it can access with remote network shares. Depending on how your shares are setup is the issue here, is everyone allowed to access these? If so you may have trouble, if your somewhat restrictive on who can share and what they can do, doesn't look like it will spread that quickly.

Now your AV, I know Symantec CE, has the ability to do remote installs. Being that this virus won't attack the AV, just push out managed clients to your infected systems. Update them, poof. You can even create a new group for them under SSC 8.1 X and have it set to scan immediately on new virus definitions, thereby fixing theirself!