I'm not saying the Flyers deserved to win that series, but that was a bullshit ending. A blatant trip on a guy with a torn MCL isn't called and a goal is scored. So instead of one down on a powerplay the Flyers are two down with the life sucked out of them. Again, the Flyers might have lost the game anyway, and chances are they would have lost the series even if they won that game, but that was not the right ending.
While I agree, that should have been called, two things - (1) I think the ref saw him swing and hit the puck, and then the follow through hit the legs, I know that doesn't really matter but I think that's what he saw. (2) Whether or not a dude has a torn MCL has absolutely nothing to do with anything.
That was definitely a big moment, but like I referenced above, I've given up on the NHL consistently getting calls right at all. Nothing called or not called surprises me at this point, unfortunately.
That all said, regardless of how upset Philly fans might have been, throwing full beer cans on the ice at the players was ridiculous and dangerous. Not what you want to see from a fan base, someone could have really gotten hurt.