Well I do hope he has his ass covered then. And that Obsidian aren't cunts idiots of olympic proportions.
It's unlikely that this shitstorm will do much to their bottom line. Suing MCA, however, might sink them. Mega bad publicity stretched over a long time, it would poison the working atmosphere dividing the place into loyal drones and a fifth column, there would likely be resignations among key people, it would get that much harder to hire new talent, and so on and so forth.
If they're at all smart, they'll hunker down with a curt "No comment" to any inquiries until this blows over. And it will, unless they do something as egregiously stupid as making this into a juicy court case.