All of the corroborating sources I've seen are just blogs or "news websites" that fail to link a reliable source document on what they're alleging. If it's real, we'll find out.
Good point. I think the people being the loudest (i.e. Donna Brazille) are buying their safety with exposure so that it would be suspicious if they were disappeared. That's why they took out McMaster's father. It's not as suspicious because things happen in nursing homes all the time and he was old enough that his death wouldn't be considered a tragedy.