I guess it would depend on how much you liked or depended on your job. Getting fired if you really like or depend on your job is never fun. As for getting notified by twitter, I’m withholding judgment. First, I suspect there was more direct discussion than just twitter. If you are going to fire someone, they may or may not follow you on social media so firing them on social media may or may not be an effective way of notifying them. I do find that notifying the world via twitter is pretty crass. But if I worked for someone that felt that was the proper way of doing things, I have to say I would have left long before that.
I’d feel confused that I was looking at a Twitter feed, as I don’t even know how to do that.
If I were the fellow I assume you mean, I would think I had been sacrificed by the men who pull strings. As a coward and pawn, I would think whether I were satisfied I had been fully told what to do in this case, and try to obey my instructions to avoid the more unpleasant fates they could inflict if I were to displease them further.
I think that might depend in part on how much I already hated that boss.
That kind of treatment is virtually certain to garner some sympathy for the person affected, even if he didn’t merit it otherwise. Some bosses would be careful about things like publicly humiliating subordinates. But there can’t be anyone left among those particular subordinates, up to and including spouses, that would be surprised at such callous behavior in our presiding vulgarian dotard.