I'm a bi-vocational pastor. This title means I work two jobs; one at the local hospital, the other a local church. My job at the hospital is not as a Chaplin but as an Orthopedic Tech. So, I rarely, if ever, tell patients or staff at the hospital what my "other" job is. I have adopted this practice intentionally. I do not want people to assume what I am like as a person by one of my professions. I want them to get to know me as a person first.
Without exception, every person who has discovered what my "other" job is shocked. I'm not sure if that says more about what I am like as a person or more about people's preconceptions of a pastor. Maybe that is why my denomination leadership has difficulty with me; I don't fit the mold.
It is easier for us to stick a label, defined by our preconceptions, on people than try and get to know them.
Paul is working very hard to convince the Galatians that he is not "Jerusalem's" mouth piece. He is intentionally distancing himself from the other apostle's leadership to make sure the Galatians don't think he is just like the "agitators". Paul is different. So he is trying to avoid guilty by association?