While I know how much it sucks to lose your job, I can't say I sympathize with this guy completely.
Not because he was being an asshole, but because the next Xbox is still very much under wraps and shrouded in NDAs and secrecy until MS feels it's the right time to reveal the console.
Adam could have easily treated all this speculation and rumor about the next Xbox like his employer's do: IGNORE IT AND MOVE ON.
Honestly, it's really not that hard to keep your fricking mouth shut about these things. I work at Capcom. We have company meetings every few months where we get to see a lot of things that in the pipeline. Sometimes, some of those things spill out as rumors on the internet. It's tempting to want to be smug and say, "Tee hee, I know something you don't know!" But NDA's exist for a reason, and they should be honored.
I'm sure every MS employee is sworn to secrecy about the next Xbox, including Adam, and by opening his mouth, he lent a lot more weight to those particular rumors surrounding the box and it's online, and I'm sure MS wasn't happy about it. I wouldn't be either. Not because the always on thing is good or bad, but because I'm sure they wanted to control how that is confirmed or denied, and not through some shit talker on Twitter.
He really could have just kept his damn mouth shut, but he felt compelled to talk, and it cost him his job.
I have a Twitter and Facebook. It is incredibly easy to simply not be a douche, or ignore things that you know could possibly get you in hot water. I don't understand "Twitter battles" or any of that bullshit. Just act like a fricking adult when you know your comments are going to be seen by large amounts of people, and you are using a company account. I have a personal Facebook, and a work Facebook for work related stuff. I'm not going to start posting some shit on my work Facebook that reflects badly on Capcom. Some people have no self restraint. This Adam guy seems like one of those people.
I feel bad when people lose their jobs, but this situation was easily avoidable if he was a mature as he thinks he is and just didn't comment on the rumors and speculation. In a few short weeks, we'll be swimming in next Xbox related news, so I don't see why any of this had to happen at all.
It wasn't a witch hunt, or a mobbing. He brought this on himself, honestly.