One year ago I withdrew from one job application. I met the committee, the interview lasted nearly 2 hours, they showed me the institution, I had lunch with one of the senior team member. Then I suddenly withdrew before results were announced. The job was in a different country and I haven't got an opportunity to meet anybody again. After some time I see that it was a mistake.
Is it a good idea to send them an email that I regard my actions as a mistake or as unprofessional? Let say to the senior member with whom I had lunch, or to the head of the project.
I have a feeling that I have made a mistake and it was maybe too harsh to withdraw. Maybe in the future they will seek another sort of collaboration or there will be another job available at the institution.