I know from discussions with my minister that he has an unofficial support group of a half dozen ministers. People to share concerns, issues, get feedback...... I would think that most ministers have that type of support, that they create themselves from friends in ministry. When you work in a job whee you are the only one of a certain job , in a setting, you generally look for others to discuss stuff with.
To me the issue is not that a ministers ideas change over time. Of courrse they do. From reading, living, meeting, discussions, their own life journey. They may becime less ir more orthodox, The issue for Greta is , if she no longer can attest to the Christianity in our religion, then what are you doing here? With her current vocal stated beliefs, she would not be eligable for ordination. So is she eliglble to remain ordained?