That "pile" in the article's picture though, doesn't seem to capture the full breadth (looks like there is more on the left).
However, if the pic is actually representative of the "pile" at YUL, then that's nothing.
I've seen much bigger "piles" of delayed AC bags at YYZ after IRROPs. I knew it was "AC" because it was somewhat cordoned off and there was a sign indicating AC.