How often were you watering them during winter JB? My spiders are grown outdoors year round, though our winters are milder, it does get cold too at times in the low 30 to mid 30's with some hard freeze warnings when we dip into the high 20's. So often I get ratty looking leaves. During winter I hardly water them, just whatever Mother Nature gives them. I have one indoors growing in clay rocks and a little water, so it goes even drier.
Try to pull one out and check the root zone. If the roots are still firm and fat, it should carry on, as Spring conditions improve more. Just remove the dead leaves.
I just went out to check on my Spiders, there is this one baby I kept on stepping on last Dec, so I moved it to another basket, it was still young then, so during winter, it really had a tough time. I thought it was dead, all leaves downright brown, but pulling out the plant I saw the roots are still firm and new ones are clearly forming now. There is a tiny new leaf coming out on the side too, so I returned it to the basket. Such a resilient plant.
