By Sam Ryan This week certainly hasn’t been one of Australian rugby’s proudest but in time, it may prove to be one of its most important.  Ralene Castle’s reign at Moore Park appeared to be doomed from the moment a handful of ex-Wallaby captains delivered a scathing yet detail light letter to interim chairman Paul McLean.  In the current climate, it’s hard to imagine many high level executives surviving such an attack and Castle didn’t.  In her three years in charge, Castle was far from perfect but she also didn’t create the mess she inherited.  As a female CEO, she was attacked differently and personally and that was wrong and a sad indication of where large parts of society remain.  But removing Castle won’t solve many if any of Australian rugby’s issues.  As head of Rugby Australia, she was the first to fall on her sword but to turn this thing around many, many more need to meet a similar fate.  I understand that I’m calling for a lot