During the punitive expedition in 1906, he fled to Germany through Odessa, where he worked in the Berlin office (1906–1908), then later in the Mintzer brothers' factory in Vienna (1908–1914).
In the 1920s, Eiduk served as a Soviet representative to the American Relief Administration, whose agents appreciated him for "moving with a celerity not characteristically Russian".
[citation needed] In 1919, an American diplomat testified to Congress that Eiduk was, with another Cheka leader, considered the "most blood-thirsty monster in Russia".
[2] On April 23, 1923, Eiduk was dismissed from his post and expelled from the Bolshevik Party for "loitering and playing in casinos" and sent to Central Asia, where he served on the Turkestan–Siberian Railway Planning Board (1923–1924).
[citation needed] During the Great Terror, on June 4, 1938, he was arrested by the NKVD as part of the "Latvian Operation" on charges of "espionage and belonging to a counter-revolutionary organization".