Gutting the Trap Oxdizer would turn it into an expansion chamber and would slow down the velocity of the Exhaust Gas going to the Turbo and it would not work as well.
As they said if the Trap Ox has not been updated yet Mercedes is supposed to do that for free. I think I also read that if the Trap Ox has damaged the Turbo someone got a Free Turbo out of it.
If you just don't want the Trap Ox there is a so called "Test Pipe" that can either be bought or made to replace it.
For details on a lot of projects:
DIY Repair Links
DIY Links by Parts Category - PeachParts Mercedes ShopForum
PeachPartsWiki: Do It Yourself Articles - Mercedes Vehicles