Flight diverted after passenger sends pilot a note referring to orders from God.
This is the only flight that makes sense, and if it is indeed the flight, it looks like it was scheduled to stop at LGA anyway.
The first article makes it seem the flight diverted, but this one clears it up, and also confirms what flight it was.
From the article:
The note said “the shed of my blood and everybody’s blood would cure all AIDS and cancer.”