> "In fact, with both engines at idle, the asymmetric thrust had disappeared, and it was trivial to keep the plane straight and level."
> "First Officer Ryan even seemingly forgot that the left engine was at idle power because he put it there himself not even two minutes earlier."
And here we have the primary cause of all the confusion. It was not trivial to keep the plane at level, if engines had no power. The "sexism", the "given their earlier conversation, he surely knew where arguing with Okai would get him (which was nowhere)" aren't the cause here.