Candice Bergen, the actress formerly known as Murphy Brown, has come clean in a Los Angeles Times profile about the famous 1992 contretemps in which Vice President Quayle zinged her TV character in a speech about family values for setting a bad example by blithely choosing to be a single mother. Says Bergen now: "I agreed with all of it except his reference to the show. . . . The body of the speech was completely sound." When the baby was practically written out of the sitcom the next season, says Bergen, "it was very distressing to me, and I couldn't get them to change it."