If, supposing, Zaid Hamid (former Zaid Zaman) did follow a man named Yusuf and later found out that the man was not on the right path, he should simply own up and admit he made a mistake. Every one makes mistakes and it takes a man to admit it. People would understand and move on.
That is the correct way to handle the issue rather than third party supporters being in denial and coming to his defence!! It is upto Zaid to confirm or deny the story published in the news media.