The said power of god in this organization like many others, starts at the top and extends all the way down to the elders,
When Rutherford implemented the name the JWS it was most likely the same time this president of god's kingdom with all of the procured power
attached, felt it was necessary to keep a watch out for deserters or opposers to his leadership.. Remember the opposition he got when he took over the rains
after Russell died, many Bible Students disembarked after Russell's passing and Russell was aware of the situation. Procured power can easily fall apart
and vanish quickly if there aren't stringent rules laid out to maintain it. Since Judge Rutherford was a man of laws and rules it was within his character to
act as a Judge overlooking the actions and behavior of the minions below him to keep himself in power.
As for why some people like this Frank fellow who just wanted to walk away from the organization quietly , but they still felt it necessary to DF
is nothing but a tell tale story of trying to instill fear into peoples minds of what could happen if you decide to leave this organization.
Call it an opportunity to exploit a situation to meet their own self serving needs.
And again its a show of power displayed by the elders to the rest of the flock of who they are also.
The shunning process by biblical standards was put forth to separate individuals who are actually within the flock, not ones that have long ago left it.