Re: "Ahead, Space Normal Speed"
I don't judge people by their facial expressions but by their words and deeds.
To me it just seemed that Ferris was enjoying that the renowned starship Captain James Tiberius Kirk had made a mistake and was in a predicament to resolve the situation. More along the lines "See, I told you from the beginning it was a bad idea but you just wouldn't listen. I was right and you were wrong".
"The first duty of every Starfleet officer is to the truth" Jean-Luc Picard
"We can't solve problems by using the same kind of thinking we used when we created them." Albert Einstein