I don't know if BamBrogan is an "unstable guy" or not. But I'm not at all sure your summary "who was ousted form Hyperloop one by the whole board and officers" is accurate based on what was reported at the time.

For example, from an article in Wired [1]:

> The lawsuit against Hyperloop One includes a security camera image of a man, apparently Afshin Pishevar, holding rope and walking through the office. BamBrogan allegedly found a noose on his desk after complaining about company operations.

The axe is the only thing that seems weird, everything else you quoted can easily be explained by the fact that they'd failed to secure more funding and had to shut down even though they didn't want to. Many of us on Hacker News have no doubt experienced this kind of situation first hand.

Also I should mention that although Arrivo was started by ex-Hyperloop One people they were definitely not doing a hyperloop system.

[1] https://www.wired.com/2016/07/hyperloop-lawsuit-brogan-bambr...