There is no need to be so rude, even I'd this user did hack their iphone, My iPhone was supplied to by Oracle, shipped directly from At&T and after loading it with music alternatiely from two macs, my iTunes sync display has multiple devices just like Ryland's and mine is by no means hacked or jail broken in any way. I also was looking for information as to how to remove some of these devices from my iTunes sync list simply for housekeeping reasons.
Apparently, "Ryland" reset his phone and they disappeared, but it would be nice to know if there's any other way to do this's. It's not an important technical issue to be sure, and you obviously are quite competent when it comes to Apple products, so I am surprised that you felt the need to be so vehement about the "hacking" issue instead of helping him and then maybe discussing your concerns afterwards.
I manage several Systems engineers who do SAN and NAS (storage) support for our company. Customers often do foolish and infuriating things, but if one of my guys talked to another's human being like that, they would at the very least be written up and possibly even fired on the spot of I was there to see it.
If you intend to be equally rude or condescending to me becuase I wriote this critique of your methods, go ahead, I sort of expect it, though I hope you won't find it necessary as I am just trying to point out something that you did possibly with noble intentions, but handled poorly in my opinion. And it is obviously the opinion of others as well.