Here's how I see it, Original owner still owns the wheel. original owner was out of order to pull out of the deal at such short notice, I'd be angry too. But if he doesn't want to do the deal, that's up to him. Yes it sucks, but hey that's how it is.
There doesn't need to be an arguement.
When the wheel arrives, it should be sent back, as he said he'd do. Deal is off.
End of story.
Or am I missing something?
EDIT: Got names mixed up, sorry!