There was resistance above 7c, so the big money pulled their props to draw sellers lower.
Today they piled the buy orders in below 6c, but when it was obvious there were still sellers above 6c they pulled the props again.
Nothing happened to the fundamentals of the company, its just a change of sentiment from frantic buying to (at the end of today) frantic selling. Herd movements have little to do with a company's intrinsic value.
CGM Price at posting:
5.1¢ Sentiment: Buy Disclosure: Held