Can't remember exactly what happened. I have like 3 brain cells left and my weed smoking probably means I'm down to 2. But Ramsey called him out in a coverage faux pas. I recall watching it and not being sure who was at fault because we don't really know the call and the Rams never commented. But I remember thinking it may well have been Ramsey not him.
I don't think there's anything to that mind you as the Rams don't put up with locker room BS. But it was something I recall that involved Rapp and I'm sure it pissed him off whether he was at fault or really pissed him off if it wasn't him.
Keep in mind that Farr knows these guys and is around a lot. He may just be ribbing one of the guys he likes. Rapp seems like a great dude so I'd be surprised if he has those kind of issues. Whether he fits on this team IMO comes more down to his ability to function in split looks.