Teams don't talk about these kinds of deals out of concern for the exact problems we're seeing right now. They're concerned that somebody will object and the deal they've accepted falls through and they end up doing more harm to the team than good.
This is the reason Peja and other players aren't told in advance. They are only told when it's necessary to complete the deal. Sometimes that is right before games or road trips or at awkward times. So players sometimes find out from friends, who heard it on tv, or read it on the internet.
It's unfortunate, but things like this are harder and harder to keep secret. One of the reasons for that are the fans insatiable appetites for this kind of news.
People have said that Artest should be reprimanded for his comments, but if the league office is serious about this stuff, maybe they should try harder to keep confidential information... confidential.
I do feel empathy for him since he’s sort of in limbo. I would not like not knowing where I'm going to be living and playing for the next few months, or having to give your all to a team that tried to get rid of you.
I'm not sure if he's upset about being traded (he's probably as ready as he'll ever be), or the fact that his opportunity to escape Sac was dashed right as he was walking out the door.