Seems extreme but very much a "Who is on the Lord's Side" moment that many Churches need to have! I would definitely use as a litmus test for any candidate for leadership within the Church. There are some ESSENTIAL THINGS that every Church member should be on board with (Inspiration of Scripture, Virgin Birth, Deity of Christ, Etc.) and some NON-Essential things (Calvinism/Arminianism, Cessation/Continuation, various eschatological views, Etc.) where we can disagree and have charity to one another.
They may not be a "Mega-Church" for long though and they need to be ready for this. If they do not stand now, the goats and tares will take over and run out the sheep.