While you're at it, keep a "CYA" file. Keep a log of all shady things that go down in the company. Keep a record of emails, Slack messages, meeting recordings, etc. Mutually assured destruction is often quite effective.
I was also "threatened" by a company in the bay area (not a YC company, but a company backed by a very large fund and the company is currently a "unicorn"). The founders also threatened me with things like, "It's a small world out here. Everyone knows each other in the bay area. Your work will follow you forever."
I ended up leaving the company after a massive shouting match with the CEO and nearly a first fight.
No one has ever heard of this story and it has never followed me anywhere.
Can't help but feel like you should have kept the SaaS and grew it more and sold it later, or at least keep it running and leverage it for an llc/business/tax deductions.
I don't care what strategy they use. However, when a site like HN surfaces content it's a jarring experience when there's content you can't access because of a paywall.
They can keep their paywall and paid content, just get it off HN.