Mind controlled or not.
Oh, yeah. For sure.
I never had to deal with such a situation, but I did have to deal with some things where the welfare of others was concerned and I, along with others, decided to inform people of the danger to their welfare. This was despite a C.O. saying not to do so. I simply told the people involved that I was not allowed to tell them the following words that I was about to say.
I am pretty confident that if I thought a situation was dangerous to some, I would do the right thing. And courts typically rule that people should have done the right thing.
Like yourself - I agree that the WT Society should make it MANDATORY for elders to first report child abuse to the police - THEN report it to WT legal.
Treat it as seriously as an accusation of murder. If Johnny comes running up to the elders and says that Brother Chester killed someone, you bet your ass they would call the law first. If they thought Johnny was lying, you bet your ass they would have to get help for Johnny.
Stand by an alleged victim. It is not saying you believe him to aid him to go to authorities and get the psychological help he needs. It is not taking a side in a judicial matter against the accused. Elders get it wrong and think the first thing is to decide who to form a judicial committee against in these situations.