Are you saying Pystar did not provide the original retail disk to their customers? If I don't need to provide the bill of purchase to sell my MBP with the original disk, why should they need to provide their bill of purchase of Mac OS X if they are in fact providing the original disk to their clients?
No, they needed to provide the bill of purchase to comply with a court order during the discovery phase of the lawsuit. Failing this essentially means that they told the court "Look, we didn't pay Apple for the OS X copies, so we can't even begin to argue we had rights to distribute it under first sale doctrine, which is a legal gray area as far as software goes anyway".
If Apple wants to come after me, so be it. But I'm telling Apple, I own my software, I paid for it, and I'll put it on a PC if I so choose. Tough. Don't sell it to me if you don't like that.
That's precisely what they do. They specifically tell you that if you don't agree with the EULA, you must cease use of the product immediately and return it for a full refund.
Ie : if you don't want to play by our rules, we won't sell it to you.
So you can justify breaking the EULA and thus your contractual obligations all you want, but the fact is you're in the wrong until you get this clause of the EULA overturned by a judge.
Seeing how the judge in the psystar case dismissed this argument from Psystar by dismissing their counter-suit, good luck, Apple now has legal precedent.