Until Roger came along, everybody who saw Willie in his current state started to think something was seriously wrong. Roger looks at John Karlen's beautifully acted weak, weary, and wary Willie, and says Willie's faking it. I suppose it's pure coincidence that Louis Edmonds had trouble with his lines today. Be that as it may or may not be, now that Roger's made the connection between Willie and the cows, he's surely going to decide not that Willie's a victim, but rather that it's all Willie's fault - and of course that would have some truth in it.
I'm having trouble suspending disbelief as to Willie's condition during this round of watching. I keep thinking of James Hall, whose performance I hadn't seen the last time I watched these episodes, and wondering how it would have looked. And my conclusion is that one problem with James Hall's performance was that during this week, when we are given to understand that Barnabas is doing dreadful, unspeakable, perverted things to Willie, I might have suspected that James Hall's Willie was actually enjoying it, because Hall's Willie was definitely more of a pervert than Karlen's Willie is.