What I meant was if we were to turn around and re-sign Deron, it would be like we'd shafted the Nets. As mentioned before in my previous posts on this thread, GMs in this league work a lot on relationship & favors basis and to turn around and re-sign Deron would have meant the end of relationship between KOC and Billy King. Why? Because the more chance Deron has in re-signing with the Jazz the less chance that Deron would consider the Nets. Out of courtesy, KOC needs to shut down that possibility (unless it's for a sign & trade with Nets).
First off, I don't think Deron is ever coming back here. But you've been on this soap box for a long time (beyond this thread, even) and I'm wondering exactly how you know all the implications of such a scenario playing out. The NBA is business, no? To the best of my understanding, the Nets knew exactly what they were getting into - Deron staying long term was always a 50-50 shot, at best. So they took that gamble. The notion that Dwill coming back to Utah would impact the league wide perception of KOC's ethics or integrity (and subsequently his ability to find willing trading partners) is silly. KOC planning out such ruse (this would have to be the case, if his integrity were in question, right?) is even more far fetched and a bigger gamble than NJN trading for Deron on the hope that he could be persuaded to stay.
Besides, IMO, GMs are probably always suspicious of each other anyway. It's their job to get the upper hand.