The 30 million wanting to buy at 0.05c that suddenly dissapeared...

The 30 million wanting to buy at 0.05c that suddenly dissapeared was never a buyer in the first place.
Perhaps he was trying to cause panic in the current share price. When he pulled the buy order off it was suddenly sold down to 2.9c, so it had the desired effect.
I have posted before on this subject on sellers and buyers who are clearly way out of reach of the current share price and whether they should be allowed to place such orders.
If I was to place an order at 0.05c my online broker would tell me that the order is unacceptable because it is too far out of market. This rule should be applied everywhere because it does create a misleading market. It offers the potential for rampers and down rampers to manipulate.
Questions should be asked why the practice is allowed to continue. It could be stamped out quite easily. Doesn't make sense to me why they allow it.
You could also argue that the 4 million selling at 7c and above are also way out of the market.