Well, supercaley, if you could sue (and a lot of lawyers are saying you could) it would only be after you were fired, which I hope is not yet. It would be a group action, so not much effort required from you personally, although it would take years to see any cash.
Suggest you call yourself a NI survivor, which seems accurate and truthful.
I really wish the Guardian was a little less lip-licking about the Murdoch fallout. Thousands of NI workers are in truly pitiful circumstances at the moment. And for a paper which campaigned against the hacking on grounds of taste, they might be a touch more tactful about the myriad innocent NC employees who are also, if not so publicly, victims.
The other thing that makes my eyes roll is that now lot of people think the G's reporters did the investigations that floored Murdoch, not the publications who set up most of it and kept on hammering away - the Spectator and Private Eye.