It does not appear that disfellowshipping was held over the heads of the Witnesses back then as it is today, requiring that they conform "or else".
It was very, very rare for someone to be DF'd back then. In actual fact, between 1954 and 1972 when I was attending meetings, I can only recall 1 DF'ing taking place in the congregation that I attended. There were though, amazing rumours constantly circulating through the circuit about the reasons that some had been DF'd from other congo's.
The Portsmouth South congo had something of a reputation as being a congo where they had a "Different kind of truth there", and multiple DF'ings did occur there at one time.
Most "wrongdoing" was handled by a secret probation up until the early 70's, after that they just went haywire.
Englishman.