The right thing to do is to thank them for their work, let people know that they're moving on, and ... you don't really have to explain all their personal details. It's more important to leave them with their dignity... and let them go on to live another day. Remember, what you say at that meeting, that's their reputation.
Ben HorowitzI was an executive running a pretty substantial group before becoming CEO, and I had no idea what it was like. When something goes wrong, people say, 'It's all your fault.' Your reaction is, 'It's not my fault.' But what do you mean? I was the founder, I hired everybody in the company, I was managing it.
Ben Horowitz