I'm just trying to be objective, in describing the group that way. But some facts might be interesting. The law firm involved is far from ambulance-chasing rungs - it is very politically connected up in Washington but that's a different point, isn't it? Also, the people assembled by the group, you can check out their credentials, they appear pretty highly qualified, maybe very highly qualified. Sullenberger certainly is.
And the lawyer who heads up the group sits on one of the FAA's main advisory committees. Other than these facts, I have no basis to say the group is on a stunt or not - though FAA in how it has conducted the litigation has taken it quite seriously.