When Coppell quit Manchester City, even his assistant, Phil Neal, was in the dark.
Coppell's former England room-mate had left his job with Cardiff to help his old pal at Maine Road, but told me: "It was a shock to all of us. It certainly wasn't something we had discussed. Stevie didn't even let me know his thoughts - he just came in to training and said 'you take the first team, I'm going'.
"It was a bolt out of the blue and he didn't explain his decision at all. He's quite an inward person like that and quite a secretive type. He said he wouldn't tell me the full reason and he got my goat a bit because he left me in an awkward position."
The Manchester City chapter may have covered the shortest period of time in On A Wing And A Prayer, but it became the longest chapter in the book.
To this day, Coppell has never revealed the real reasons for quitting and I doubt he ever will.
"It was a private moment in my life and I don't want to talk about it. But it wasn't what it seemed," he told me during his Reading reign, as close to spilling the beans as he is ever likely to come.
But what became clear to me was that there was no single reason, more an unwanted collection of unfortunate events.