Not Heinz44, but Andreas :-)
A rough estimation: Take the traded volume since beginning of August: On the TSX there was a volume of 26 Mio CAD. If PNP had to collect 10 Mio CAD for their debentures, their effect was just 38%, adding the other Canadian markets, it was possibly even less then 28%. Nota bene - of the volume, but I am sure it caused 100% of the effect on the SP!
I remember, sometimes you need only one snow flake to trigger an avalanche. But this would imply that the situation would have been very critical before...
I do not see any critical situation inside PTK, but PNK dumping is causing heavy hits every day.