Hi, thank you for replying!
It was somewhat squishy around the edges of the brown area when I removed it from the pot, but it's completely solid now. Here are some more closeup photos so you have a clearer view. The roots appear to be completely healthy to me, just some patches around the stem seem to be rotting.
From what you said, I'm currently at the opinion that the drying and replanting approach is the best course of action.
Thanks again!