The NBA should raise hell about this, say they know this is just circumvention of the CBA, let all the teams know they are sick of it and will starting putting watchdogs in league offices if they hear any more trade rumors next year about players being bought out and returning to their team before a trade is even consummated and just jot this down as another loophole they have to fix with the next CBA
I don't think this course of action will accomplish anything until the loophole is closed with a new CBA but it is another issue for the league to bring forward to make everyone forget just how wretched the officiating is