With the exception of a couple of odd lot trades, the entire sell off is coming from TD Securities, which tells me that its probably just a single account.
I'll bet it's nothing more than someone with a big pile of very, very, very cheap shares whose decided not to wait around for the reserves report and has other opportunities to invest in.
If the volumes were in the hundreds of thousands and it was a wide variety of brokers selling, THEN I'd be worried.
Still, it's a little disconcerting to see the price drop over 7% this quickly.
Cheers,
PW