The concept of the Earth spinning backward does not have a direct effect on the reversal of time. The rotation of the Earth determines the length of a day, but it does not affect the fundamental direction of time.
Time is a unidirectional concept that flows forward in a linear manner, from the past through the present and into the future. It is a fundamental aspect of the universe and is not influenced by the Earth's rotation or any other physical phenomena.
If the Earth were to suddenly reverse its rotation, it would certainly have significant effects on our daily lives, such as the reversal of day and night cycles, but it would not reverse the arrow of time itself.
The reversal of time, as commonly depicted in science fiction, is a theoretical concept and not something that has been observed or achieved in reality. It involves reversing the state and progression of all physical processes and events, which goes beyond the simple reversal of the Earth's rotation.
In summary, the Earth spinning backward would not reverse time. Time would continue to flow forward regardless of the Earth's rotation or any other physical phenomena.