Never heard of PlayHeaven before. Now it is on my black list. I will make sure to remember it. Unless I read a public apology with an offer to hire him back, I will make sure to go out of my way to let everyone know about them.
PyCon -- making off color jokes is reason to take statements and escort people out in front of everyone, but posting insulting face pictures on attendees (sponsors none the less) is ok? Nope. It is not 'OK'. There should be a public apology. Guess which one makes PyCon a hostile environment? Imagine someone saying "I refuse to attend PyCon if the person who posted a picture of naked woman in one of the slides comes too". Everyone understands that, sympathy flows on twitter etc. Now what if I say I refuse to attend if Adria attends. I don't feel safe and don't feel welcome when my face could easily end up twitter with an insult underneath. Isn't that the same issue?
It's related, but not equivalent.
Initially it was probably done more to companies. It is probably the most efficient way to get a large corporation to listen to a customer -- fear of public shaming.
Adria applied it a personal level and in the context of a tech conference. That was the "new" twist here.
From an external point of view a scared manager, a small pyramid of scared managers, or a single owner doesn't matter. I see it as a corporate response. That is what makes manager's job hard -- making such decisions. He made a bad decision, the company or higher ups haven't responded yet, or apologized.
Both are tough choices - but its obvious which one is the most (to the employer).
The pattern is that firms will react, and overreact, to what they perceive as a scandal involving hot-button issues. The firing was a mistake but maybe the people involved were afraid of what might happen if they didn't do it. Or maybe they were acting on the same social outrage that Adria was acting on.
The point is there's a whole social anti-pattern behind the firing and it's incorrect to pin it on any one actor to the exclusion of others.