In trashing the company's value? No, I'm not entirely sure it's fair to blame that one on him. I don't know the guy or have an opinion on him but, based on what I've seen since Friday, I don't think he's done that much to contribute to this particular mess. The company was literally on cloud nine this time last week and, if Friday hadn't happened, it still would be.
Honestly, I think they did that to themselves.