Yoga and missing the points

In a previous post I mentioned how the claims against things like yoga are often, in evangelical circles, over played and poorly supported. Well here's an example.
"Examples of occult potential. Yoga practice involves occult meditation, the development of psychic powers, and may result in spirit contact or spirit possession.
Major problems. The public perception of yoga as a safe, spiritually neutral practice is false. It is difficult, if not impossible, to separate yoga practice from yoga theory. The one who engages in yoga practices for health purposes may also find himself converted to an occult way of life.
Biblical/Christian evaluation. Because yoga is an occult practice, it is prohibited."
Let's just have a look at those points, by all means refer back to the original site for context.
The first point is not proven, merely asserted, and certainly flies in the face of the expereince of a number of people -myself included- who have found yoga for exercise simply that, physical exercise; a kind of slow fitness programme with greater suppleness the main result. It did not invlve occult meditation, the development of psychic powers or anything that might result in possession [dubious possiblity for someone in Christ anyhow, don't you think?] This is an example of guilt by association: the fact that some people may have used yoga as part of a regime for occult meditation and alleged 'psychic power development' in no way means that it is intrinsic to the practice, any more than owning a knife makes you a murderer -like me you might just use them for chopping vegetables rather than stabbing other people.
Separating practice and theory being impossible; again this is asserted but not evidenced and seems unlikely on the face of it and in the light of experiences like my own. Guilt by association again. You might be able to use a slippery slope argument here but once you do that you have weakened the case against and admitted the possibility that theory is not intrinsic to practice, or that it may be possible to separate them. It's a meaning holism argument, I suspect, which I don't think stands up.
The third point is premised on unproven assumptions. Yoga is not intrinsically demonstrated to be an occult practice, this again is merely asserted on the basis of association and non sequitur arguments. I would accept "Where yoga is used as occult practice ..." but not what is actually written here. And that is before we try to work out just what is prohibited in scripture.
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