The Polish bishop Wesolowski did go through a canonical trial in the Vatican, which resulted in his laicization in June 2014 - based on canon law.  The trial that was pending at the time of his death was a criminal trial, under Vatican City State criminal law (not canon law), for child molestation and possession of child pornography.  The Vatican argued at the time that Wesolowski could not be tried for child molestation in either the Dominican Republic or his native Poland because, at the time of the criminal behavior in question, he was a Vatican diplomat and subject only to the law of the Vatican City State.

Presumably Apuron in Guam cannot be considered an employee of the Vatican City State, and thus the Vatican proceeding will likely be a canon-law trial probably resulting in laicization.  If there's to be any criminal trial in the Apuron matter, I'd guess that will be up to the government of Guam.  I don't think that the changes implemented by Francis cover criminal action.