Thanks for the ovation! Anyway, I'm afraid that bumblefoot can be a 'common' occurrence in chickens. I find that it's almost always standards that get it. My standards get it but my bantams never do. Maybe it has something to do with weight to foot ratio. Weird. Yes, your bumblefoot case doesn't look as bad as it could get so you might want to fix it before it gets worse because the longer you leave it the worse it will get.
It's probably a good thing to learn as much about it as you can now before you have to deal with a real bad case. If you continue to raise chickens for a long period of time you WILL see bumblefoot again! Unless you're pretty lucky.