Well, setting aside the issue of whether Marissa should have confronted Otto before leaving the store, I think Otto's behavior was still unacceptable. He lied with a straight face in front of the judges when they were being questions. That's not cool. He said something to the effect of "I didn't know." That's a complete bull.
I do think that Marissa should have gone. Like others said, she failed where she claimed to excel. Everyone relied on it and her excuse was "I did what every pastry chef is taught . . ." So? She failed the dessert, plain and clear.
One thing I missed: Who made the pork on Korean team (Marissa's and Otto's team)??? The judges were raving about the pork so much. Did they disclose who made it? I missed it if they did.