When did smoking weed become a fire-able offense in the NBA? You don't think #4 smoked his fair share? Trading Brad Miller had nothing to do with his weed smoking. He simply wasn't going to be a part of the future of this team because he's past his prime and not all that good anymore. Personally I think we would have been better off just waiting out his contract, but there's nothing wrong with saving a little money and trading him now so long as we get expiring contracts back.
Salmons didn't need to be traded, but he was probably our most trade-able asset because his production was above his salary level. You'd hope any trade involving Salmons would get you something of value because he's a player that a lot of teams would like to fit into their rotation. His scoring was somewhat redundant next to Martin who scores more efficiently and he was blocking Donte Greene who needs to get playing time if he's ever going to develop as an NBA player. Now we have Nocioni instead who does have a front-loaded contract which helps, but he's underperformed for two straight seasons now. If he continues the same trend he's in Kenny Thomas sunk cost territory. Hopefully that won't be the case.
Moore, Thomas, etc don't need to be traded. In fact, don't trade them! Their contract relative to production makes them a net loss on any roster so the best possible solution for us is to wait out their contracts and take the cap space. Trading them means salary coming back and it's highly unlikely that salary will be tied to usable players.
That leaves Udrih and Garcia as the two guys I'd like to see traded. Neither one is enough of an impact player to justify their cost. If you've got a good thing going -- regular playoff appearances, and good chemistry you don't want to mess with -- than keeping guys like this on your roster is justifiable. But on a last place team with few assets anyone else would find valuable who's only hope of getting better is through free agency and the draft, both of these guys are just wasting cap space. And I think both of them are trade-able, Udrih probably a little less so, especially if you're willing to send some money to make their contracts a little more palatable. Short-term loss for long-term gain. What a unique concept!