Re: I still don't understand why the Spurs traded Scola
The Spurs got into a bad situation because they didn't make a decision on Scola until it was too late.
When their proposed trade for Scola to go to an Eastern conference team failed, the Rockets came in with the only reasonable offer before the deadline. The Spurs ended up with a choice of whether to let him sign in Spain, or trade him to a possible playoff opponent for cap relief. They decided on the latter.
If they didn't wait until the last minute, they could've chosen for Scola to go East, where he'd be nothing but a footnote to the Spurs. It's what they got for procrastination.