It is hard to think what Moeein should do considering this situation. Hoder has made a very interesting survey (Link to his post) with the e-pool he designed that gives a clue that many of those who have read his post would not like Moeein to endorse the approval for candidacy after "ORDER" from the supreme leader (because it is undemocratic). I think people expect reformists to heal the trust and prove that they can make the changes people have been expecting for eight years, and this way of running certainly can not fill that gap. The impressions of many ordinary Iranians that I talk to are: "They are all the same! Reformist or conservative".
For the reformists to do anything, it is not really important whether they continue their campaign or not, but how to win back the trust that they lost! And at what price?