Yep! The young prophet from Judah should have seen through the older prophet. If the GB says do this, and its wrong and we go along with it, will the desert god send a lion to eat us???
I've asked many a JW about this over the years. The question boils down to whether the biblical model would have a person support/obey/follow a supposed God-appointee based on the authority the individual supposedly has as a God-appointee without regard for personal sense of right and wrong. The general consensus is that JWs should obey the GB (read: "faithful slave") because it is appointed by God, and if the GB makes a mistake in what it asks of us then we are not guilty for following that mistaken directive/teaching.
Then I ask the JW why the biblical Aaron was removed from high office and suffered premature death if not his tacit support of a mistaken act by Moses.
I ask what this biblical object lesson of Aaron and Moses tells us, if anything.
Then I get deer-in-the-headlight looks in return. Most have no response because they've been conditioned to obey the GB no matter what. They've been conditioned to accept that obedience to the GB equals obedience to God. Yet the biblical episode of Aaron and Moses categorically disputes this.
When it comes to Watchtower theology, at one point Watchtower expressed the idea that in the instance of Moses' mistaken act (at Meribah as I recall) Aaron should have acted to check Moses' actions, and because he did not then Aaron suffered loss of high office and premature death. But under current Watchtower theology for a JW (in high office or not) to act to check some mistaken act by the GB would achieve the threshold value of "apostate". (And, before I get snotty responses, by "mistaken act" I'm being gracious).
