Nobody's talking about removing an individuals rights to sue, but surely as a professional pilot one would expect that things are going to go wrong at some stage during your career....it goes with the territory. A reasonable person wouldn't expect to go suing the pants off everyone every time something goes wrong.
To put the shoe on the other foot, consider the situation if an airline was to sue a pilot for something they had erroneously done during a flight that damaged the reputation of the airline?
Again, I don't want to understate the seriousness of this particular situation. It could have ended up a lot worse if the crew didn't get the aircraft under control and they clearly performed exceptionally well in what would have been a very hairy period of time on that flight deck. I just find it interesting that when things go wrong these days the first thing people think about is "Who can I sue?".