For whatever reason (stupidity of the Fenway grounds crew is my guess) the foul line on the fence didn't line up with the foul pole. It put the umpires in a bad spot. I'm not sure that was the right call but I understand the call. The Red Sox really should be fined for not having the foul line and pole line up. I thought the call should go our way, if only because they caused the problem, not us.
Of course you thought the call should go your way, you are a Jays fan. If the Sox hit that, I would be reading "that was a good call by the umps, it was clearly a foul ball"
Anyway, I think all of us are baffled and not sure what is going on with the foul line under "Pesky's Pole". On the replay, it was fairly clear that the ball was foul, hitting just to the right of the pole. The Umps spent enough time reviewing it, and I am sure they saw enough to call it foul, or else it would have stood as a home run. The angle of the fence in right field is awkward and the line is lined up with the pole as best as it can be at that angle.
Wanting a fine to be assessed to the Red Sox doesn't make much sense. I would think all of the dimensions and foul lines would be inspected and approved by the league. I can't imagine the line being off for all this time and it not being noticed by the league or umpires.