Hi,
you don't get stuck in a state, create a logic that activate another state and you are good to go if your itween action "stops" on exit.
The key is to always use the start position or rotation for your itween action using the current value and not the expected one if that itween had finished, and so it will start a new itween using the current position or rotation, that's perfectly valid even at fast pace.
Bye,
Jean