Funny how I see the same thing and see it more as a look of "Didn't that putt look like it broke right?", or "We/I sure got that one wrong" as oppose to him casting blame on the caddie.
I'm with @Golfingdad on him calling out his caddie at the travelers last year. That was a bad look. A
Maybe I read the look on his mug wrong..? I just call em as I see em.