The secret is in Turn 3 guys!

Joking aside, as I haven't actually set foot in Coil yet I can only but speculate. So far every fight outside of Coil has had predictable move patterns based on HP percentages and other factors. Is Twister so random in nature that it cannot be anticipated when it's going to happen, based on an HP percentage or move rotation from the boss? If it can be you can at least preemptively try to move out of it. But it's just one of those things, you have to KNOW exactly when it's coming.