Re: Dojo etiquette (explanation) ?
I am so glad in my dojo etiquette is not so strict. I personally (even without knowing anything about etiquette) would never get into seiza with my back to the O Sensei picture or if I need to fix my gi I go to a corner and face the corner. But yes I passed behind Sensei and between him and the kamiza and sometimes he even told me to (he was showing a detail on my Senpai and wanted me to get into a position where I could see that detail).
Of course I realize now that the day I will step into another dojo I might get into trouble for not knowing proper etiquette...ouch!