I'm not entirely sure, but i'd guess that it could be done. You would just need a tune to reconfigure the drivetrain to 100% RWD since the front wheel drive shaft assembly that was removed would still be trying to spin? I'm just throwing ideas out there I honestly have no idea.
As others have said, the newer generation cars have a system that is biased pretty well for an awd platform. If you want to achieve this you must weld the center Torsen differential or have a new unit machined that acts like a spool.
Additionally you would then remove the front axles to reduce drag. This is a well documented modification on many Audi awd models such as the S4, A4, S5, RS4 and so on.
For sideways action turn of your traction control, a stiffer rear swaybar also helps.
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