I have heard of Module masters coming up with the fix for this one for at least 2 years and $750 is just not worth for the repaired unit, in my view...
So I am not betting on it.
I did see a nice video on youtube where a guy took it apart.
I think in his case the commutator was worn out and brushes gone... And it could not be repaired...
Right now it seems the motor for my rear pump is a problem and I still have full assist on front brake and I would say 95% of braking.
If anyone can donate or sell for cheap their broken ABS module, please let me know.
I would try to repair and perhaps make one working unit out of two faulty ones... (my bike is 2004 K 1200gt with integrated ABS III unit)
I would post my findings here so others can benefit as well.