Yeah this has to be damage caused by crushing the bag while stored or such.
Stress cracks would be a fine line but it wouldn't separate that far, there had to be some force applied.
CANADA has a shortage of Controllers like the US & elsewhere. As a consequence airspace capacity is often reduced around airports like CYUL where I operate. Recently, Nav Canada has been issuing NOTAMs at the weekend restricting VFR and IFR...