The real hero on that flight was the Check Captain Dave Evans. He prevented RDC from
advancing the thrust levers to climb to 10000' for his Walter Mitty dreams of an Armstrong spiral!
As for the water bottle technique of working out if you're going over a TS, why are you going over the top of a TS when you should be going around it? If the cloud continues to move up your windscreen then you are going through it and if it moves down your windscreen then you are going over it.
