Yeah, I'm not really denying it looks that way. But for your initial point, this off season has been crazy both ways (players getting overpaid big time, but then also players taking less money than they could have been getting). So I still think that RJ could very well have been thinking he will get more than his money's worth by opting out in the first place.
Basically, I suspect that you and a lot of other people here are right in it being a strange kind of contract RJ has been getting (still, financially, it isn't that bad for the Spurs considering luxury tax savings and stuff).
Probably I'm still not able to put together that they would be able to bring over Splitter for this kind of money and at the same time throw money at RJ.
I know that my point with trying to milk Duncan's window and keeping him "happy" (would he even complain? I honestly don't know) even if it means overpaying RJ in advance (prearranged deal) only to have at least a starting caliber SF is a purely psychological one.