Why was the CDF's Kiesle letter leaked on its own?

As Catholic World News reports, there was no context. We have no knowledge as to what background information was provided in support of this priest's petition for laicisation. Is this perhaps a significant omission?

Still experiencing a strange mood in reaction to all the attacks on the Holy Father. Anything may happen next. It is as though his adversaries are slowly circling him, flinging first one thing and then another at him. They do not achieve the primary success they desire, but they are making do with good deal of collateral damage from the falsehoods which are sticking, here and there, like mud, in the minds of the less well-informed among the spectators of this blood-sport.