What intrigues me is that the Spurs have actually created a means to make these tweaks without having to divide up the MLE to address several needs. The willingness to deal Scola gives them a chip that has to be somewhat intriguing to teams that are in a rebuilding mode and have some time to be patient.
The Spurs certainly seem to have at least 1 more trade coming, which will get one of the needs solved -- I guess the particular need that will be addressed by the trade will depend on what they can ship out. If you could put together a deal that involved trading Nazr and Scola's rights and even Barry, you could bring back a pretty significant salary (and, ostensibly, a pretty good player). That would still leave you with most (if not all) of the MLE to get one more piece and finish off what would seem to be a pretty solid summer.
Even if you can't package Nazr, you can likely get something decent for him and make another deal to ship out Scola's rights for still another piece.