I guess I have to go with the gut feeling, sometimes you feel like playing exactly how it is on the vinyl and sometimes you feel like being Peter Frampton, all in all, it's a feel, you're making music, if everyone played The Back Door the same way I think the song would have becoming quite booring over the years. It's all about a flavor of life !!! imho !!
I think you are wrong there my man. I prefer the original version of the Back Door and never get tired or bored listening to it. But hell I never get bored listening to Cajun music.