A neighbor had an ailing African violet plant. For quite a while, I've been eying the pot, feeling desperately sorry for the pitiful thing, wanting to assist. Finally today I offered. I should have taken a "before" picture, but it was in such urgent need, not a moment could be wasted! (Okay, that was an exaggeration - haha!)
There ended up being two plants in the pot, so I took them out, separated them gently, and repotted them in two pots. Their roots were not deeply enough into the soil. Perhaps you've seen African violets like this; they grow up and up, and their root systems look dry and unstable.