A former Russian spy has detailed the stomach-churning way he narrowly escaped President Vladimir Putin’s death squad — by hiding inside a dead cow’s carcass. Dmitry Senin, 47, was a top-ranking Federal Security Service agent when the Kremlin suddenly accused him of being a traitor after he started probing a potentially corrupt cop back in 2017, the Telegraph reported . Senin, who had had the highest level of security clearance in Russia at the time, said he spent years trying to clear his name before eventually plotting his escape when Putin’s troops invaded Ukraine in early 2022. Dmitry Senin, 47, was a top-ranking Federal Security Service agent when the Kremlin suddenly accused him of being a traitor. Dmitry Senin With the help of a network of smugglers and trusted contacts, Senin claimed he put on a gas mask and rubber suit before sliding into the cow’s dead remains near the Kazakhstan border. As an extra precaution, he also wrapped himself in tin foil to prevent being detected by thermal cameras.…