Steve: "We know the evidence about the shroud being medieval, not of Jesus's time at all. If you have revolutionary new evidence to the contrary we're all ears...."

Horseshit! If new findings are found, the you might want to look into them...not doing so is willful ignorance and you two seem to willfully stupid and proud of it!
..as so far as the rest..you DON'T know what you're talking about..(not a rhetorical insult, just the plain truth!!

GfS