The post on 371k is still there and you can try to dig for past posts with Wayback Machine.
https://web.archive.org/web/20111101000000*/https://bitcointalk.org/index.php?topic=6825.0
With an archive in 2011, the OP has less information than an edited post in 2012
by Maged.
Who is
Maged? and why Maged edited that post?
I guess Maged used to be a forum moderator.
Oh, I'm still alive and kicking.

Yeah, still have them, though like was said, it would not be possible to sell them all at once and become an instant millionaire. No one is going to buy that many at once. I have kept my client running 24/7 since then though, managed to generate a bit more before the collective mining groups took over

Without the massive server farm I had going before, I'm just down to my personal desktop,
so it's never gotten over the 371k since.I do keep many, many backups though just in case

which had the screenshot as proof. although thats not the actual post i remember, though its fuzzy at this point. but I thought he made a post about his troubles with the company wanting the btc back or something along those lines.
Either way i guess we will never know exactly what happened, hard to belive someone trying to blackmail mitt romney one year, is donating houndreds of thousands of btc to wikileaks the next