I have not only had this dish (MANY times) in restaurant, but have prepared at home many, many more times- I've even worked at one of his restaurants. This is the best food I have ever had without a close second. The steak, the Bahia, Encamisado, Brochette- everything is great! Too bad to read about what happened, I have noticed a lot of changes that neither my wife, or myself, cared for. All The Best in your new endeavors.
The illustration is of a simple butterfly rather than a 1/4" slice. I can't imagine slicing a magnificent piece of tenderloin so thin.