I would not dub, as that may just cause more problems for the little guy.
What you can do is separate him and make sure he has access to plenty of food and water. You can also minimize the pain by taking a gallon jug of water (You can rinse out a milk jug) and dissolve two plain aspirin in it. Give that to him as needed. You could also mix in some gatorade or pedialyte to add some electrolytes.
Applying neosporin to the area will also help with the pain, and will prevent infection. It is more important to make sure he is getting water rather than food. If you have to, give him some water using a dropper if he is not drinking by tomorrow. Keep a close eye on him, but he should start eating and drinking again by tomorrow. Keep him as warm as possible and apply vaseline to the unaffected areas of his wattles and comb.