The new growth points on the first pot receded and some of the growth was clearly getting shaded out, so I cut out the section with the largest growth and repotted it.
You can see how the roots come directly out of the old corm, which is why I expect to have a bit of trouble rooting each of the new plantlets separately. The corm is starting to shrink from the bottom up, as the energy is used up by the top. I'll have to watch for rot down there, even as I try to encourage more roots higher up.
The starts on the new pot are growing nicely:
