Who is the "we" who backed out?
At WS or else In Sessions, there was a chat about how the PERP frequently likes to insert him/herself into the investigation, so they aren't necessarily looking at this person as NOT being involved.
The whole thing is NUTS.
However..... I suppose this will sound dreadful, but I can understand the FBI not sharing information if the FBI has general suspicions about the entire area due to the "restricted" priests at SJU.