I think some panic selling towards the end. The increased volume also suggests for whatever reason, some have thrown in the towel, and that support just isn't there.
We need some re-assurance from management that there are no serious problems. Nothing specific, but just a general letter to the shareholders, saying that progress is being made. That might stop the bleeding.
There is a saying in the stock investment world that good news travels fast. The opposite is also true, and that is concerning.