It was User:pdf23ds. Here's the note. Excerpt:
I wish I could have been cryonically preserved. But suicides aren’t treated well enough for that. We get sectioned. I tried asking the cryonics places about options, but they wouldn’t talk to me. Fuck you, Alcor. Fuck you, CI. I might have lived except for you.
Don't know him, but he lives in Texas.
Awesome! Another LW Texan, who also lives in the middle of nowhere! I think we can finally have a Texas meetup, now that we know he's alive!