Even after being able to digest it for a couple days, it still feels and looks like a horrible trade. You don't give a divisional rival a free gift. There's no excuse for that.
If the Spurs really, really needed to save money, they should have done something like Barry and a first rounder to the Sonics/Bobcats/Warriors for a second rounder. Then you ship Scola to the highest bidder (not the Lakers, Dallas, Phoenix or Houston). Even if that's a second round pick, you'd basically end up trading two second round picks and $8M in savings for a fist round pick.
You don't salary dump a player making 40% of what Barry makes to a divisional rival and include Scola as part of the package. I don't think Scola would have been a great fit on the Spurs, but he's going to be a good scorer. In Europe, he scored more per minute than Ginobili did.
If Adelman almost won a championship with Chris Webber, he can do something with TMac and Yao, with Scola scoring when those two guys start feeling the pressure.
Two years from now, this is going to look like a horrendous trade.