Former Vancouver police officer Clyde Ray Spencer spent nearly 20 years in prison after he was convicted of sexually molesting his son and daughter. Now, the children say it never happened.Matthew Spencer and Kathryn Tetz, who live in Sacramento, Calif., each took the stand Friday in Clark County Superior Court to clear their father's name, The Columbian newspaper reported.Matthew, now 33, was 9 years old at the time. He told a judge he made the allegation after months of insistent questioning by now-retired Clark County sheriff's detective Sharon Krause just so she would leave him alone.Tetz, 30, said she...