Backbending course

I have been hearing about a one month backbending course offered by someone known as "Venkatesh" - Today I found their contact information.
From what I hear, the course starts off very easy and then moves to extremely intense! The poses are held for 20 seconds at a time and most people are very sore in the back for days at a time.
I also heard that the course is really excellent.
I think I will pass for this visit, I need to keep my focus for why I am here... and this will prevent me from sticking with my Ashtanga practice.