I am undecided.
If the Celtics choose to stay big against Miami's small ball lineups, then I say no.
If they choose to go small and put Jeff Green at the four, then I think Von Wafer could be a solid option. Either plug Von Wafer in there or put Rondo in the second unit and slide Delonte over the two. Have an extra ball-handler/creator. Either way, Von Wafer or Rondo, the aim being to bring more quickness to the table.
Edit: Leaning towards staying big for now. See if they can take better advantage of the opportunities they had in the post in Game 1 against Miami's small ball lineups. So no Von Wafer for the time being.