Full disclosure, I know very little about VWs specifically, but my thoughts are as follows... I believe on AWD Hondas, the transfer case that sends power rearwards is fairly plug and play. I think in many older applications, the transfer case can be unbolted and a cover installed to delete the 4wd system, or reverse to install it. Early K-series CR-Vs also had the benefit of the rear half of the system consisting of a viscous coupler, so no further computer control was needed.
I don't know whether a Golf R's transfer case is as easy to remove, but I think it's likely that it's significantly more integrated electronically. I think they have torque vectoring and whatnot on the rear axle, or am I wrong? Then again, it is also my understanding that VW electronics are in some ways much more open, from what I've seen with OBDEleven and VAGcom stuff. Total speculation, but I wouldn't be surprised to hear that there's a single computerized off switch that would make the computers not look for anything outside the transmission other than wheel speed sensors.
I realize I haven't answered your question at all, but maybe I've helped to point in a direction for you or someone else to find some answers. I don't think there's much of a V2 Goblin userbase yet. If there were a similar V1 Goblin technical question, there's probably a half dozen folks that'd have the answer off the top of their heads. I think the community will get there with time. I'll continue to search around to see if there's any answers to your question specifically out there. I hope you get the answers you're looking for.