Lets all calm down a bit. The only public "info" right now is that from the press. The Norwegian newspapers are notoriously sensationalist. The reality will be somewhat different from what has been reported.
This incident was NOT a "land immediately" situation. The weather was considerably better than was reported. There was no perceived drama from pax. It was a controlled landing. Redundant systems in the aircraft did their job. A well executed recovery operation brought all back to land as soon as possible.