I think the thinking here is that Shaq's only got 2 years left on his contract, unlike when he signed with Miami for 5 years (I think?). Now, the majority thinks that Shaq's done already, but take note that that's what people have said when he was first traded to Miami. The Diesel, lazy and fat as he is, has been known to take up challenges just to prove people wrong. The season he was in Miami, he got in shape, lost some weight and was lean and ready to run.
On the other hand, Phoenix loses their best rebounder and defender. They will soon find out that Shaq's not as good in rebounding and will miss those athletic put-backs MArion does for their team and those steals and blocks that he provides them. And hell yeah, aside from Amare, who will make those alley-oop plays that Phoenix loves running for Marion? Shaq, perhaps; but I doubt he's pretty mobile this season.
Oh, and the LAkers lost to Atlanta 98-95. :'(