So PQ thinks JMJ was manipulating the price? This might explain some of the games going on (painting both up and down) at the end of trading days. However, shorting (naked shorting?) of shares may be hard to prove, and proving deliberate manipulation would be even harder. Not sure PQ will win this one, though he may get them to settle for less than they expected to get.
As a side note, a bit of DD on JMJ and Justin Keener (the main guy) might have prevented PQ from dealing with this company at all.