ok - I was thinking about this some more, and I think the confusion was the very first assumption, that anarchy is the stripping of "power", and it's too easy to see how that leads to contradictions way too quickly, to where it doesn't even seem possible for anarchy to even exist as a theoretical concept in a pure form. That just didn't feel right to me, because it's clearly possible theoretically, if not practically.
The problem is that anarchy is not the absense of "power", it's the absence of "authority" in the civil or legal or governmental sense. Using that definition, then anarchy is NOT the same as panarchy. because it's authority in a legal sense, rather than power in an influential sense - that's where the contradictions kept coming into the argument, I think.
So without civil authority, you are still going to have some people in the community who have more influential power than others, and you can also resolve the criminal issue without breaking the definition of anarchy. There is no civil authority, but a crowd has more power than an individual, and if they want to banish him or kill him for his crime, they will most likely do just that. And yet, there is still no legal authority for them to carry out the "sentense" there's just the fear of physical harm by the crowd to keep the bad guy away or to keep him in line in the future