I'm a strong believer that a "dignified silence" is better, future employers don't like hearing that kind of thing, it puts them off. ..especially when it's on social media. I remember a few years ago at work helping the personnel manageress look at c.v's as part of some training I was doing, there was a c.v from a young man that sounded amazing, however he'd cited as reason for leaving last job as "bad management". The c.v was immediately cast aside! On the other hand now he's given us a little snippet..c'mon Guy spill the beans, what do you really think...tell us about the shite you were selling, how you found it hard to hide the disdain, the dirty tricks, the meetings with management etc etc!!!!
He's much better keeping his mouth shut.
Let's be clear here, as amusing as he could be at times he played along with all the shoddy tactics for years, in fact at times he appeared to revel in them. If I was him i'd be keeping my grid firmly shut because whatever he says about Sit-Up will make him look equally as bad.
He worked there for years and it's obvious from his reaction to his 'sacking' he had no intention of leaving so I imagine he would have kept his snout firmly in the trough and played along with all the bullshit and followed the path he now says they are heading down.
Double standards perhaps? He's well out of it, he might just keep his reputation.