There is a good deal of variability in the effectiveness of the newer formulation OxyContins [OP]. However, they do still contain oxycodone and could be used to combat or even eliminate withdrawals. However, if the OPs don't work well for you recreationally or medically (for pain) I doubt they'll work very well for fighting withdrawals.
I'm going to edit the title of this thread for easier searching in the future. waldo777, if you have any questions, feel free to shoot me or another member of the BDD moderating team a PM.