From Tom Colicchio's Bravo blog:
The sight of Sam yukking it up or Ilan yelling, "Get him! Get him!" from behind the camera was just as disturbing as the sight of Cliff tackling a stunned and terrified Marcel on the floor. And I'm not willing to hold Elia blameless just because she wasn't in the room -- I know she heard the others entreating her to join them, so she must have heard Marcel calling out for help. The whole thing brought to mind that famous quote, "All that is necessary for evil to succeed is for good men to do nothing." Any one of them could have spoken up and said, "This isn't cool, guys. Knock it off."
But they didn't, so as far as I was concerned they were all to blame and I was ready to send the lot of them home and let Marcel win by default.
For the first time all season, the Producers stepped in with a veto. Sending all of the chefs but Marcel home wasn't going to happen.