While the CPU is taking a shot, press R to change to the overhead view. The CPU cue stick may now be rotated from this screen.
Re-shoot when playing against the CPU
To re-shoot an incorrect shot with the same angle, but a different strength, wait until the CPU takes its turn after the bad shot. Press Left to enter replay mode during the CPU's turn, then hold R to change to the overhead view before the replay begins. Hold A and re-shoot after changing the strength of the shot.