I have been looking at the trading action again today, some of the orders were mine.
It looks like the "capping" action is back on again - at .31 or so.
It is also possible that this is some arbitrage action. (Between US and CAN shares and currency exchange)
If there are shares on offer on the "pink sheets" (PMMEF.PK) in the States, somebody with the "right connections" (e.g. brokerages) may be selling the PEM shares and buying the PMMEF.PK - if available - to make a slight profit
Since I don't know how to look at the bid/ask of the PMMEF.PK (does anybody?), I cannot tell if such a situation (advantageous to the broker) might exist.
Note that this "abritrage" situation, if it exists, could be the broker giving their clients a "best efforts" fill on their orders and nothing to worry about.