So the Athletic talks about why he was pulled. I remember the play and while not having the same reaction as Botterill, I did say WTF out loud.
“Also playing zero minutes in the third period was Sabres defenseman Rasmus Dahlin. The healthy 19-year-old was pinned to the bench. The No. 1 overall pick from 2018 took his last shift with 1:37 left in the second period.
The puck went into the corner in Buffalo’s zone and Dahlin had the edge in a race with an Ottawa forward. Inexplicably, Dahlin pulled up and slid back, allowing the Senators to gain control.
Botterill slammed the table in his press-box suite, stood up from his chair and walked away from the action. When he returned to watch, he stood with his arms crossed.”
https://theathletic.com/1384487/2019/11/17/thats-what-big-captains-do-inspired-jack-eichel-takes-matters-into-his-own-hands-with-four-goal-outburst/?source=shared-article