Whale fin grew a giant root - do I split or keep as one?

It’s a rhizome, a lot of monocotyledons like Sansevieria/Dracaena (whale fin is one) have them for asexual reproduction, it’s not a root but a stem that grows underground, but it can grow roots out of it at nodes (also props). This kind of thing is called adventitious, or “a structure that develops in an unusual place” since stems are typically above ground. What to do with it? You can definitely take some off, but make sure to keep the open wound dry until it hardens over, otherwise it’s an invitation for infection (fungal and bacterial)

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I got this 2 years ago and I haven't repotted into a bigger pot because I wanted it to stay a desk plan and I have a nice stone outer pot for it. I usually refresh the soil every year and I had to split it last year but when I came back from a vacation this had happened. I had to cut the old pot off of it and now I'm not sure if I split or what to do with this giant root(?) Off the bottom of it. I water a couple days after it gets dry.