PYEONGCHANG, South Korea — The Russian curler who failed drug tests at the Winter Olympics has made a last-minute decision to withdraw his appeal, a move that came after a meeting between an aide to Russia’s president, Vladimir V. Putin, and the International Olympic Committee head, Thomas Bach.

Alexander Krushelnytsky’s decision on Wednesday to waive a challenge comes as the I.O.C.’s executive board prepares to decide on whether to lift its suspension on the Russian Olympic Committee before the closing ceremony of the Games, which would allow Russian athletes to parade in their own colors, a privilege denied at the start of the Olympics.

Deciding what to do about the Russian delegation — banned for a state-orchestrated doping program that corrupted the last Winter Games — has proved to be a bruising conundrum for the I.O.C., which has seen its own members fall out over the issue.

Bach, the I.O.C. head, met with Igor Levitin, a former transportation minister who is now vice chairman of Russia’s Olympic committee, in Pyeongchang, South Korea, a few hours before Krushelnytsky announced that he had had a change of heart. On Thursday, the Court of Arbitration for Sport, or C.A.S., ruled that Krushelnytsky was guilty of doping and disqualified him from the Games, stripping the bronze medals he and his wife had won in the mixed curling event.

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