Question: When archaeologists find physical confirmation of events that occurred in the Bible, to the consternation of atheists and non-Christians, is it a good thing, a bad thing, or are you indifferent? Is the only valid source of belief for you that which is unaided by objective facts?
It is a good thing. The Bible does not mention the shroud or give it any more significance than a piece of the cross would/should have. We don't have physical proof of the Ark or of the Ark of the Covenant - Faith tells us they occurred. If the shroud can be proved authentic, then its significance becomes astronomical. If it ends up being proved fake, then the damage to carrying the Word becomes terrible in lost faith/souls.