It goes way further than that, because it's not a matter of them merely following JPII's lead at Assisi.
The debacle with the Hindus at such a place as Fatima could never possibly have occured without the full approval of the pontiff. This was not some isolated incident that happened due to a few wayard Bishops.
Which, of course, YOU can document. Look in AAS--I'm sure there's a note there...