Figure-skating commentators Tara Lipinski and Johnny Weir couldn’t hide their relief after suspected doping cheat, Kamila Valieva of the Russian Olympic Committee, stunningly plummeted from gold-medal favorite to fourth place in the women’s free skate event on Thursday. As the 15-year-old Valieva’s low scores were announced, and it was clear that the International Olympic Committee’s plan to scrap the ceremony and withhold medals if she finished in the top three would not be needed, Weir exclaimed, “Thank God!” “Thank goodness for all the other medalists to have that moment,” Lipinski said, to which Weir quickly added, “And to have done...