Just thinking out of the box to prepare for emergencies re extreme BTC volatility:
Maybe we need to temporarily halt BTC / US-NBT trading in order to protect the peg.
We could withdraw all the liquidity bots and Nu-pool bots. Ideally you would have another trading pair as backup e.g. ETH/USNBT or LTC/USNBT to enable NuBits holder to trade even while BTC/USNBT pair is halted / most liquidity taken away.
The risk is of course that some people would still dump NBT for BTC and say the peg is not held.
But I think wit proper announcements and explanation that the peg is against the US dollar and having alternative pairs to trade on I believe the damage would be limited. The damage of BTC going out of control would be far greater and potentially devastating to NuBits. Are we prepared?