In the case of Adenium and other plants with succulent roots, root rot is not a misnomer. It is a real possibility and a likely outcome of overwatering... if the affected areas are discolored (brownish/yellowish), soft, and spread through the plant. You want to excise the rotten parts to prevent the spread of the disease. It will inevitably spread to the above-ground parts of the plant if left unchecked.
Do you have any experience with Adeniums, Will? Root rot is an actual disease that spreads and can be stopped by surgery. The sulfur and cinnamon would help keep rot from reappearing in the healthy part after resection. But I do not generally use either, preferring to let good air flow and discipline with the watering can speed the healing process.
Spy, you can leave your plant out of the soil for a week or so to heal if you leave it in bright shade (no direct sun) with good air flow. More time for more damage, less time for less damage. When you pot it up, wait a week or so to water.
Also consider revising the care you have been giving your plant, so as to prevent rot in the the future. Be extra careful not to overwater during the late fall and winter when the plant is dormant or nearly so.
