A measured and reasonable response? Well, is it not a PM/investigator interfering publically with a matter before the courts? Otherwise, my problem with it is not that it is measured and reasonable - which it more than likely is. Mignini has a right to defend himself - a right which he exercises rather well, I should say.
But you're catching on. No, I cannot give another example of Mignini drawing a line in the sand like this - apparently (so far) neither can anyone else. Folk here have speculated as to why, and it remains speculation - albeit a reasonable one. Satanic Rite allegations served Mignini's case when the tabloids were in full gear, now not so much.
This is where the argument here slips back into other stuff. Again, just to represent my side of the merry-go-round, there were an awful lot of people back then who reported that he did say this. Nadeau is one (and Mignini supporters - one at least - calles her a liar), John Kercher is another who can reasonably be assumed to have got this knowledge either directly from Mignini himself, or maybe Maresca. True Kercher's account says nothing about if either Maresca or Mignini actually believed it, but Kercher seemed to have believed it, acknowledging that Mignini's claim was "controversial."
That's the sum total of it for me. Evaluate it as you will. I can only pretty much cut and paste from here on in.
Key to Spezi's case, unless I'm wrong, is that Mignini consulted the Perugian psychic for help in the Narducci issue. Spezi claims, someone can correct me if I am wrong, is that this guided Mignini in the early going of the Kercher murder, a horrible event which happened the day after Hallowe'en.
The line in the sand for Mignini is to deny this, as he did with his letter to the editor. That's what makes it an issue in 2013, where it was not one (apparently) in 2007-'08.
It may be Kool-Ade (I go with the old packaging), but there has to be some reason why Mignini would not visibly complain about this years ago, but now, in 2013, is trying to actively debunk the claim.