why it is a cork... in my opinion. Cork has come to mean the type of off axis rotation, similar to how a rodeo and mistys have their own type of axis even through different degrees of rotation(or the kang flip for example). It isn't what a traditionalist might call a full "corkscrew" spin, but that has faded away from freeskiing... We are going after "cork" spins... My main justification is this: if you do a cork 720, you do a cork 720 because it is catagorized by that type of axis. If you do a cork 900, which may be a continuation of the 720, is still the same type of axis. But I think the main point is the cork 720 had the potential to turn into a cork 900, so a cork 180 could turn into a cork 360, which could then turn into a cork 540, and so on...
so it isn't a "corkscrew," but its axis would be in the catagory of what we have come to know as "cork"
sorry, im fucking tired, but its a cork