In March 1951, Crüger relocated to East Germany. This was in response to the orders from the regional party authorities. He made the move despite the warnings from his friend that within the East German political establishment he was likely to be viewed with some suspicion both on account of the time he had spent in the west and on account of his sometimes free-spirited outbursts. His wife, who during this period was appearing as a theatre actress on stages both in the west and in the east, was also permanently resident in East Germany by 1953, the border between the two halves of Germany had become progressively less porous. Between 1951 and 1953, Crüger was based at Rostock undertaking an in Archeology.