I guess there is the chance it was the source itself. Seems to happen to at least a couple of series every season and for only one episode usually. Either that or somebody consistently fucks up every season for just one episode for no explicable reason.
"... his supporters resembled, in other words, the McGovern coalition of lumpenproles and university-educated New Leftists, avant la lettre."Do you really want to say that the 60s were that -Michael