Mr.Somnath Chttergee(Speaker of Indian Parliament) should resign or not,what is ethically right ?

In politics ethics has no place and it is game of chair. ethically and morally he should have to stand with his party but he choosed the chair. present collusion of Maya, Left and Naidu also best example of no ethics in politics. during session first somnath admited CD and thenafter he turned hostile on very nextday.