I bought most of these from a dealer and they were just new babies. I think I may have put them into a container that was too big for them before they were ready. None were pot bound and I have never seen roots like this on a spider and I have seen a lot of spiders.
Those pictures show what most of mine looked like prior to this problem. These roots are like hair, very fine and so many. Not anything like I ever remember seeing before. I removed many of them. We do that on our baby trees that get shipped in to plant. We cut the hair roots off so the others have more strength to grow. I will give them another month then I think they are all going to plant heaven. I am not messing with something like this. My babies I grow get pot bound in no time and have nice tubes. Maybe the babies were not healthy to begin with but I will take the blame because somehow I screwed up. I just wish I knew how I managed to mess up all of them. I did notice that the rare species are the ones that are the worst. Naturally. Isn't that the way it always is.