Thanks for taking a look.
What exactly is the feedback knock correction and what's likely to cause it, other than loose things. And what to you mean by "hard"? I'm assuming "significant" correction?
You mention that it's interesting that it happens on throttle lift. Why is it a concern in that particular instance?
Other than the suspension clunk on rough roads, I don't notice anything else (that I can hear anyway). And that noise surely wouldn't cause the knock correction when the noise isn't present, would it?