As a result of World War II, the church was left without active congregation, and the Soviet occupation regime handed the building over to local Baptists in 1950.

From 1944 until 1991, the Soviet KGB used St. Olaf's Church's spire as a radio tower and surveillance point.

Since the city could not pay this sum, the foreigner proposed the following challenge: if they found out his name, he would forgive them the debt.

For this, the Tallinners sent a spy to his house who heard Olev's name in a song his wife sang.

They waited for the foreigner to finish the construction and when he was putting the cross on the tower they shouted to him from below, Olev the cross is crooked, he got scared and fell to the ground with a toad and a snake coming out of his mouth, which denoted the demonic possession of this man.