Hi NotFormer,
While this story may apply to other countries to some degree, I believe that that the one your are thinking about is Romania.
Cut off from main stream Jehovah's Witnesses just after WW2 and forced to refer to older WT material, the divergence between Western Witnesses and Romanian Witnesses theocratically, grew. Many Romanian Witnesses were sent to prison in the communist period and a feeling of abandonment developed. Ultimately, two or three sub-Witness groups formed, each with their own Kingdom Halls, Elders and administrations. However in the late '90s, a push from the US to encouraged a reunification with the greater Church, was made
The Governing Body sent representatives and deals were made (primarily around some stumbling doctrinal differences and the issue of appointed congregational positions) and while much was made of this publicly, it seems that even today, Witnesses are not totally united in that country.
I expect that the core reason for Romanian dissatisfaction, lies in the fact that Romanians are generally a conservative people. Thus so it should not come as a surprise that these feeling have not completely dissipated. And realistically, if you got into your time machine and brought back any Witnesses from the 1970's and dumped them into a Kingdom Hall today, most would find the Disneyland song, the beards and the very flexible understanding of 'the service', quite hard to process.
(see the video "Gerrit Losch: Maintaining Unity Under Ban" in you are interest in the JW perspective of this story)