To demonstrate a phugoid one must have dead clean air, and an aircraft which is otherwise longitudinally stable (c/g shifts etc). The R22 is so light and squirrely that a one knot gust of wind will have an effect on its stability. If one of you drops his pencil, never mind fidgets around in his seat, it changes the long c/g of the ship. Therefore I believe what you saw was a demonstration of misinformation, and possibly self importance, but not a phugoid.