I heard this tape you mention, as well as JI spoke about it.
From John Ingalls,
Speaking the Truth in Love
This is JI's account of the incident you described:
A VERY THREATENING INCIDENT
December 1987 – March 1988
In late December a brother in the church in Anaheim who had been severely damaged through the misconduct in LSM office was so traumatized psychologically that he sought revenge and took definite steps to execute a very grave act. (Thank God it never happened.)
Nell