Szczerbiak isn't a chucker at all. Few if any of his shots are ill-advised and he's a legitimate offensive weapon. I don't know if anyone on this board has seen more of him than I have. He's simply NOT a chucker.
The team also lost more and more games as he scored more and more points. The Twolves had an almost perfect correlation between losses and Wally scoring. Its actually kind of ridiculous.