It is good to clarify what the state law is but a home school family certainly can use other people to supplement their curriculum or teach specific classes or subjects. The operative word in the above quote is "operator" meaning the person in charge and planning the curriculum. So really, what the state means is that someone else cannot be the "Principal" of your home school. Just like in public school, a substitute should be working off of the main teacher's curriculum and direction. And there are many classes and co-operatives that teach subjects to home schooled students for the entire year.
Linda, it may be more productive for you to offer to tutor or teach specific subjects that you are particularly good at. Although there might be a rare occasion where someone would need a "substitute" due to an illness or family emergency, it would probably be extremely unlikely. There is, however, a reasonable need for people with expertise in areas such as Wilson Reading, math tutoring and science. So you may be able to supplement your income with some part-time work that way.
Again, if you send me a message, I would be happy to talk with you.