1. There is no power in the universe independent of Hashem’s will. Any shitah that says otherwise is indeed kefirah, or avodah zarah, or whatever you want to call it. I don’t care who says it, its not Yiddishkeit.
2. The only entities that are imbued with bechirah chofshis, as far as I know, are us, human beings. Of course, that is as far as I know. HKBH can do what he wants, and give it to something else, and he doesn’t have to send us an email to let us know.
3. Describing something as “Maaseh” Soton is ascribing creative powers to something that doesn’t have independent capacity to create. Putting aside for a minute whether that is kefira, or avodah zarah, or a twisted Jewish version of gnostic dualism, it simply defies logic.