I don't have a huge problem with spraying a swarm in certain situations. And I understand that they have thousands of people waiting for the game to go on.
But I still think that they could have gotten the majority of them into a box. Shake most of them, wait 15 minutes, then spray the remainder if necessary.
I suppose bee vacuums are rare enough that they wouldn't have been able to get their hands on one of those too quickly.
I wasn't very impressed by that "beekeeper".