There is some more news (in German) incl. a short video (after the fight):
http://www.blick.ch/news/schweiz/pas...id2021229.html

Apparently a 57 year old Chinese attacked a 29 year old Chinese because his seat was reclined during meal service and disturbed the 57 year old one. The fight ended on the floor. Later the 57 year old also attacked the MdC who tried to end the fight. Finally, with the help of a passenger, the 57 year old got cuffed with some cable straps and "banned" to the last row.

With the main aggressor being "cuffed" I don't understand why they did not continue to PEK (well he was continuing shouting for an hour, but still)...