How sad! I had just recently looked up some of his posts because he seemed such a gentle soul and his posts conveyed such thoughtfulness and kindness. Such a handsome guy, too - what a waste! But the pain must have been overwhelming. The damage of the WTS to the psyche extends further than we realize sometimes.
Just a thought - would it be possible to gather these threads together and print them out for his daughters? Maybe even editing out the WTS bashing parts? Just the stuff about Ari and what he meant to us all?