Loesch once talked about a group that separated from JW

In this talk, he said that they left JW, (this might have been in Europe?). There were hundreds or thousands of them, and they had fractured off due to a "new light". Then he said that he and another JW went to talk to these ones, and "thankfully, they were able to bring them back."
This may have happened in the 70's.

Anyone remember this? Where can I find the link to this video talk?