It's not clear to me, is what just happened even possible on main net?
6000 blocks mined in a day? Sure. But at what probability?
Very unlikely it could happen on mainnet. Way too many transactions there to get stuck. At least from what I understood, it's been explained as a matter of not enough transactions to fill a large block. BUT to me it shows a poorly planned test.
They cry attack now, and there's talk of a secret testnet. Good luck with that.
Interesting discussion on github (the only public space where such discussion isn't secret) here:
https://github.com/btc1/bitcoin/issues/65BTW this could be/lead into the possible "slight but significant correction" I forecast for the next 2-3 weeks a couple pages back.