I'm very sorry to hear about this. Sadly, this is happening all of the time. I'm pretty certain a claim for unfair dismissal would be warranted in very many cases. It seems like the humph simply dismisses people on a whim. Or at least that's how it seems to *normal* folk. He shows no compassion's or consideration for his victims. It's either one big game for him, or more likely some form of delusional paranoia. He probably thinks the world, and everyone in it is against him. And as long as he carries on with this ludicrous behaviour - that's exactly what will be. Whilst he's not doing anyone any favours, neither is he doing any for himself.
When humphs finally leaves this mortal plain, he will make the lot that boycotted/attacked the Margaret Thatcher funeral look some tame. I would say by the way he's carrying on, his time is running out to make amends. Sooner or later, someone, or some people are going to seriously and collectively fight back, and win. And it will make the media, and assure his eternal damnation.
As with the banks, when one starts to win their retrospective claims, others come forward. I can see someone winning publicly, not only for unfair (falsely fabricated) dismissal, but also with further claims against their prior working conditions, and post stress!