I'd say what was he thinking, but that would suggest he was thinking at all. This is the second time in a couple of months that Bucher has come up with a litany of ridiculous trades involving the Spurs. Both times his primary objective was to acquire an athletic four, who can shoot and both times he's failed to mention what's probably the most likely possibility: Amir Johnson.
Johnson doesn't have the ball skills of Smith, but he works harder, plays within' himself, is significantly cheaper and probably won't cost the Spurs more than Blair, in terms of value. Jefferson/Blair for Johnson/Kleiza or Blair/McDyess for Johnson, works.
Let's presume for a moment that the former occurs (it's more likely, given that it doesn't increase payroll). Now let's presume that this three-way trade occurs: Spurs acquire Pietrus, Suns acquire Bell, Jazz acquire Kleiza. That would leave the Spurs with . . .
Johnson/Bonner
Pietrus/Leonard/Butler or Green
Duncan/Splitter
Ginobili/Anderson
Parker/Neal/Joseph
Sign Pargo, a half decent fifth big and bring over Richards, if possible, to round out the roster.
I'd prefer this to any of Bucher's proposals.