I'd say that the writing certainly didn't reflect that he was always compromised. There doesn't seem to be anything to dispell thinking he was, so I wouldn't argue against anyone saying he was. It's actually a cool & plausible idea or bit of head canon, but the look of his initial appearance plays like they never intended us to suspect he is anything more than an investigative pain in the butt
The idea that he & Quinn are overtaken thereafter, because their investigation was getting too close to exposing the infiltration is a cool idea too, & is something I like as my own head canon, but I don't have any reason to substantiate it as having been the intention either
The idea that he & Quinn are overtaken thereafter, because their investigation was getting too close to exposing the infiltration is a cool idea too, & is something I like as my own head canon, but I don't have any reason to substantiate it as having been the intention either