Chris Fleming wrote:"emptying the mind"
hence, the mind, not the spirit.
Just because something is primarily focused on one aspect of our selves does not mean that it does not affect and have an impact on other parts of the self. Are you claiming that someone would have to do something working directly with their spirit to be doing something spiritual? If so by your definition and the link you provided any time you make a conscience decision on whether something is right or wrong that is spiritual, or whenever you pray to god in the christian manner, or whenever you intuitively know something.
Funny how the intuitive faculty is bolstered and improved by the meditation I practice. Even though I am emptying the mind, which is supposedly not spiritual. But if this is not a way of spiritual development then how can it improve something that is by your definition part of the spirit?
Anyways you are operating from a different paradigm than most of us are discussing and one that is IMO and IME erroneous. That is cool though if it is helpful to you and makes you a better person and enhances your being. I can't tell you that your experience is wrong any more than you can tell me that my experience is wrong.