I don't remember things working this way previously, excluding a device should remove it from the Device list and from the Z-Wave Details page. I know I properly excluded the device as it could not have been paired under a new name if I hadn't excluded it.
This is defintely not from excluding the wrong device, as all the iBlinds devices I have (two in office, two in family room/kitchen) control perfectly from their Device pages (e.g., click Open on Office Blinds Right Device page and those blinds open, etc.). The only non-responsive iBlinds Device page is the Office Blinds Left instance, the one I excluded, and then re-joined as Kitchen Blinds. Kitchen Blinds works from its Device page.
So I have four physical iBlinds motors installed, all of them work from their device pages so they are the "right" ones, so to speak.
Then I have a fifth "Ghost" blind remaining (Office Blinds Left) that shows 100% healthy on Z-Wave Details page, and still has a Device page, even though I excluded that instance. I must have excluded it properly, or I could not have re-joined it as Kitchen Blinds.
Are you saying I had thought I had excluded it, but forgot and reset the device? I get how that would leave a "ghost" device behind. I doubt that occurred, but I don't have video of me doing it so no proof, of course. The fact that I've had two instances of this behavior w/iBlinds I've excluded leads me to believe there is an odd issue going on here.
There was also a recent post from someone else about a device remaining on their Z-Wave Details page after an exclusion. Could be still another operator error, but...