Not really a debrief, but soon after I started flying acro, I tried some manouver - maybe an Immelmann - and went into an inverted spin off the top. No big deal, recovered, tried again, completed the manouver without any dramatics, though inelegantly.
I said to my instructor, "That was better, wasn't it?"
"Well, in the sense that the Hindenberg was better than the Titanic, yes".
We're still good friends, many years later.