Not hard to find much more details, just about everywhere. I’ve got a link to the story on The Register. From what I’ve gathered, Resier had been estranged from his wife for some time and there was some contention over the kids. This is an uncomfortable reminder that the technologists we read about, admire and whose work we use are human, too, and subject to the same problems, hassles and frailties.
Some are already speculating over the future of his file system. I guess it is a good thing, at the risk of sounding callous, that there are competing projects, like ext3 and XFS.