I don't put a lot of weight on Butterfield's reaction. If it was a player it might be different. Butterfield was a member of John Farrell's coaching staff, as he was in Toronto, and I assume they're pretty tight.
When Pedroia said it's them, it's pretty obvious to me he was including Farrell. I think Farrell screwed up that whole retaliation thing.
So to me it's perfectly understandable Butterfield would be uncomfortable with the situation because of his allegiance to Farrell.