This is my theory - I think the trader/person that dumped 3.5m...

This is my theory - I think the trader/person that dumped 3.5m was hoping to trigger stop losses and shake out the weak hands which I think they managed to do, and then that same traders/person rebought them back picking up a few extra along the way at a cheaper price.
Or on the other hand I think @serena picked the cheap shares as I see that she has bought back in today even after her negative tantrums since the last couple of weeks.
This is traders playing stupid games on mum and dad investors emotions! Dont be tricked into selling out at the hands of the traders!

This is not advice. Of course all in my opinion!