funsc - Whatever you heard, you obviously misheard.
First, Pedja has been having back spasms since he hurt his back on New Year's Eve against Utah. It had gotten progressively worse until he actually had to have help getting out of his seat on the flight to San Antonio. They did an MRI, saw nothing major wrong. He was in pain, and he was not able to even sit on the bench because of it. He was actually more comfortable stretched out on a table than he was sitting.
Tonight, in an interview shown during the game, he said the rest has been very beneficial. He fully expects to play this week. Most likely Friday or even Saturday. There were some rumors a while back, UNSUBSTANTIATED RUMORS, that said he had been held out of a game because a trade was going to be announced the next day. NOTHING further came of that. It was a rumor. We hear tons of them...
As far as Webber goes, if there is any pain or swelling at all in his knee, they are not going to let him play. The procedure he had is very serious. Players like Allan Houston and Eduardo Najera, who had the same procedure, haven't been as serious about rehab and knowing when not to force the knee. Because of that, they are not able to play with anything close to how they used to be. In fact, I believe Najera is back on the injured list AGAIN.
Webber will most likely sit out a game here or there the rest of his career. It's a small price to pay considering the alternative.
Hope that clears up your confusion.