looks like we do not understand each other. The article says that Alexander admitted the anti-doping rule violation as both his A and B tests were positive for Meldonium. They had to follow the procedure and give back their medals.
But Aleksander did not use the drug intentionally.
Here is an extract from the article:
"...
The athlete said that he had never used banned substances and was determined to prove his own innocence.
Russia’s Curling Federation earlier asked the country’s Investigative Committee to look into the possibility of Krushelnitsky’s food or drinks being spiked and requested South Korea and Japan, where Russian curlers trained before going to the Olympics, to provide data from CCTV cameras. The Federation also plans to request the International Olympic Committee and the organizing committee of the 2018 Olympics to assist in the investigation.
..."