For the love of Murgatroyd...
a) initially Smith laughed along with the joke, so I reckon his wife had to show her disapproval before he changed his attitude
b) he exercised violent behaviour and foul language
c) he stayed to accept his award (as widely predicted he would be the winner)
d) he then made a very long speech during which he shed tears and other from his nose
e) he attended, en famille, the awards party.
I could have admired the man if he had immediately taken exception to the "humour", stood up and taken his wife's hand to lead her out of the auditorium, forsaking the rest of the ceremony.
There are not many industries that reward people above and beyond their wages/salaries for doing their jobs. The hype that is given to some of these actors and directors etc. takes so much away from more deserving people.
The Oscars got what it deserved last night and was shown to be the sad event it has become. Just goes to show what inclusion can bring forth.