As the entrance door was still spinning, the exit door also opened. Flynn was another stray I picked up that was terrified of his own shadow. He was cowering in bushes in a garden when I picked him up, and clearly was stressed and frightened.
During the week, his hard work and progress was rewarded, as we moved him to another rescue that are more likely to rehome him quickly. Good luck Flynn, though I'm sure you'll have people falling in love with you from the start.