Even if MMs know that the book/enterprise value is significantly higher.. and even if they intend to get the price there eventually:
They will certainly turn the already-large gains into massive gains via a cycle of booms and busts which is most-easily interpreted via the chart and technical analysis unless someone/something steps in and impedes their shenanigans.
Last thing they want by the time Banro gets to $2/share is a handful of investors still holding large chunks of the float. Except of course for those who have proven their determination, commitment, and savvy masochism by surviving a wild ride.