I got the impression that he said something from the dugout and got tossed, because he was PISSED coming out of the dugout when they got a camera on him. My guess is that he said too much (and justifiably so), got tossed, and lost it
When you run some of the worst teams and players out there on a daily basis, it is pretty to easy to look at guys as A New Hope when The Empire Strikes Back by playing those guys. Then many wait for a Return of the Jedi to dethrone The Emperor.
I am not an huge fan of Personnel dropping themselves to engage with social media types, as typically draws into a lowest common denominator type discussion.
Also the biggest thing for Dutch is this his first year as a true starting pitcher. He's literally never pitched late into games before this year. Learning how to make your stuff last 100 pitches instead 50 is a challenge he is undergoing for the first time in his life. Some loss of stuff should be expected if you understand the game at all.