No one should ever be part of a call that is delivered in this fashion. Your company should have all the breakers in place to ensure this never happens.
Hopefully the last of these we ever hear of, but here’s our take on Remotely Prepared – https://www.upsidedownoffice.com/podcast/this-weeks-3-minute-mass-zoom-firing
And here is one of many articles that references this debacle.
All I can say, is something of this magnitude should never be phoned in, and this is what it felt like for these employees.