No it hasn't run its course yet. It will pump/dump a few more times before the main dev steps down or gets arrested for fraud
This time is different.
Poloniex now lets you short DASH, and the leverage that provides makes fighting/controlling the market much more expensive for pump-hard whales like otoh.
DASH shorting will make the price continue to fall. The falling price results in losses for MasterNode HYIP owners. Those owners report their losses to the appropriate State/Federal TLAs, and then THE DARKCOIN FOUNDATION, INC execs go to jail.