That sounds interesting. I tried googling about it but can't really find much other than that failoverflow found a key and didn't release it, and then geohot released his own subsequently. I'd love to hear more about how directly he "stole" the work from the Fail0verflow team.
edit: Reading some sibling comments here, it seems you are either mistaken and/or were exaggerating your claim about the "theft" here. As far as I can tell, he simply took their findings and made his own version of an exploit that they had detailed publicly. That may be in poor taste in this particular community but it's certainly not theft. I do agree that his behavior there was lacking in decency, but not to the degree implied here where I was thinking he _literally_ stole their exploit by hacking them, or something similar to that.