Thanks for your insight, Lorn. I really don't see a lot of set back happening if you re-dig a fairly recently planted (1-3 weeks) bulb in the fall. As long as the root breakage is minimal, a re-planting would not be very stressful at all. When you think that the roots don't support anything that is dependent on them until spring growth, what is there to cause stress? Root hairs are always decimated, but they grow back amazingly quickly, and in fact are in a constant death and regrow cycle, anyway.
I'm also not surprised that for some kinds of lilies, such specific considerations as I outlined are really inconsequential. It's the ones known to be fussy, or slower to establish, that need extra care.
