Not really.... declaring the break-in "staged" seems to have been a group effort. One of the investigators went outside and deemed the climb up to Filomena's window too difficult. (That was an observation that Judge Massei himself did not agree with, Judge Massei invented yet another reason for Rudy not to have done the climb... Massei said that Rudy would have had to have done it three times! With the cover from the street and apartments being at the base of the house below Filomena's window... someone like Rudy could have gone up and down to the window 100 times with virtual stealth....)
The "staged" break-in, if you believe the authors, started with Battistelli and Romanelli who looked at the room and said, "This is no burglary." Both were correct on that score, since nothing had been taken from Romanelli's room. But that declaration of "no burglary" is not exactly a declaration of a staged break-in, it just morphed into one. Those comments of Battistelli's and Filomena's could just have easily be meant as what Filomea said, "Who breaks in and doesn't steal anything?" That's not exactly a denial that the breakin happened, just that it was a dumb burglar who did it.
Follain, who is the author who most closely conveys the cops' inner thoughts, has his bit about the condition of Filomena's room to butress what Follain said had happened at the bathroom. Follain leaves his readers with less of the sense of why the cops thought of the room as being staged, than with Amanda's and Raffaele's reaction... as well, as their assumed interest in making sure that the cops found the room - as well as the toilet.
Follain couldn't be plainer if he'd invented a line of dialogue from one of the students: "Gee, inspector, look at the pooh in the toilet, and look at the condition of Filomena's room? You don't think this was a break-in do you? Nudge nudge."
Apologies for going off on a Follain tangent. But I think his book is the first shot in saying that the cops got it wrong, but can't be blamed for getting it wrong. Knox and Sollecito know something they're not telling us, and fooled the cops as a result. I think that's Follain's theory at this point.
The three great chapters of his book can be summarized thusly:
1) The cops were right to suspect Knox and Solelcito
2) the trials show why the evidence against them falls apart
3) the reaction of the friends and family of Meredith to the acquittals
That's the grand summary of Follain's book, and it is the first shot of defence for the investigators when they claim that they were misdirected by the two students, and that's why things went wrong.
In short, two punk kids, one of whom didn't even speak the language, bamboozled trained investigators with misdirection. Misdirection about the pooh, misdirection about the condition of Filomena's room.
That's the theory that even Briar's is advancing. Ya, sure.