Judge Hardcase on Nostr: I'm going to assume "executing a secret hardfork" is referring to simply ignoring ...

I'm going to assume "executing a secret hardfork" is referring to simply ignoring their softfork? That's certainly an imaginative description.

Did large mining pools 'collude' and agree to ignore the softfork? Maybe. I would. It's definitely in all of their interests to be on the same page.