Like skyblade said, we're talking about friends and coworkers liking a status update about a new job from someone who's mental health suffered due to his treatment by Konami. Liking that someone who wasn't doing well in their present job is moving on to a new one is not tantamount to showing solidarity against the company they work for. An employer who actually thinks that is displaying the sort of paranoia that draws their actual sanity into question.
I'm sure not even you can actually defend that sort of behaviour as being appropriate in these circumstances. We aren't talking about employees going on Facebook and saying all the jews should be lead to gas chambers, or that Konami is secretly murdering kittens every time an employee is late to work.