I agree, good move for them. I'm a little confused though, I didn't realize that teams were allowed to make trades now? Isn't that a disadvantage to teams who are busy in the playoffs?
You're allowed to make trades even after the trade deadline technically. Those players traded just can't play for your team until next season. And while its rare, trades do happen during this period after the season is over.
As far as a disadvantage, I don't see how as there's not much for the GM to do while the teams are playing but get ready for the off season. In fact, Pittsburgh last yr traded for and resigned Vokuon in the middle of the Conference finals after they lost game 2. Doesn't seem to be a problem for teams in the playoffs to me.