This deal seems to leave the Clippers without a legit SG. I don't see playing 3 bigs in the two big positions as a problem though. There are 96 minutes available for Zach, Camby, and Kaman which should be plenty. Davis is their point and Thornton seems to be fine at SF but who plays SG? Other than that, it doesn't leave them too bad off.
For the Knicks, their motivation is obvious. They are blowing it up. They traded their two most effective players to get shorter contracts back. I guess Tim Thomas is their center until Eddy Curry gets back on the court (they had that problem already though so no change). So they have Mobley to play Crawford's minutes and Thomas and Harrington to play Randolph's. I think they might just keep winning.