Flap deployment speed limit on the 737 Max is 230kts. ETH302 was already at least 50% beyond that. So now you have an aeroplane with its flaps ripped off, per

Flap deployment speed limit on the 737 Max is 230kts. ETH302 was already at least 50% beyond that. So now you have an aeroplane with its flaps ripped off, perhaps asymmetrically for additional control challenges. Next step?