I've rasseled with this question, too. I used to sing Henry C. Work's Kingdom Coming. My feeling is that in the case of your song, and the Work song, it draws attention to itself if you censor your performance, and thus the song becomes worse for it. If you decide to keep the song in your performance repertoire, you might wish to select your audience carefully. I finally did that with Kingdom Coming. I sing it only for Civil War enthusiasts, or Victorian living history events. They seem to understand a little better the usages of the 19th century, and excuse them. You may wish to do the same with Lee Fore Brace.