So, rather than filing a formal complaint, which would allow the police to follow through a more in-depth investigation, and potentially protect the members of congregation, they chose to protect the reputation of the Watchtower Corporation and instead send an anonymous tip to the police,
Sorry, but what?
First of all, isn't the idea of "anonymous" that you don't know who sent it? So why are we assuming that it was the local elders?
Second, what exactly do people expect the elders to do? Were they meant to mind-read and tell the police all his plans?
Third, how exactly does this affect the reputation of the WTS in any way shape or form? How would sending a tip?
Isn't it more realistic that someone maybe knew he was unstable, possibly that he had a weapon, and that he had made threats against people?
Let's not have ridiculous expectations or look so desperate to somehow blame an elder for something that we appear like unhinged nutters!