Weev is a total sociopath (not just a troll), and I have no sympathy for him. He wouldn’t know altruism if it kicked him in the nads, and I have little doubt his goal was to harm AT&T with his discovery. But, by all appearances, this is a weak case and a stretch of the Computer Fraud and Abuse Act with consequences not only for legitimate security research, but for Internet use in general.
But don’t make him a martyr or an antihero. Weev is vile scum, who appears to be getting off on all the attention. If he wins on appeal he is bound to end up in jail sooner or later, but at least then it will be for a real crime, and hopefully will not bad establish case law with chilling effects.