This is being done, first and foremost, to make sure he doesn't go to Miami.
And if he actually can put up some solid backup minutes, it's a win-win for the pacers.
Mahinmi hasn't produced backup numbers this year and we all know that Bynum is light years ahead of mahinmi in terms of skill. If he can do anything over 6/5 it's a great signing.
And if he causes problems in the locker room, he's gone.
This is a great move by Indy IMO.