Looks like you can't find right answer?
or may be it is a next example of humor from England?
Maybe you should look closer?Anyway on the question of Kamae in the book Budo -teachings of the Founder of Aikido[Kodansha Press] on page39 on the question of Stance under notes. I quote. "During practice be ever mindful of your opponents stance and his relative distance:Assume accordingly a left or right stance.When the movement ends , it is essential that your feet should always be open at a 60 degree angle.If you face your opponents full of openings you will be at a great disadvantage.'' Un quote.
There are more comments on posture on this page39. Hope this helps, Cheers, Joe.
By the way I am a Scotsman , so I never tell English jokes!!