That was an ex-clearing sale, probably through VND
Post# of 22940
Notice as soon as that sale went through VNDM best offer as ask jumped to .0021.
The way the MMs process the ex-clearing sale they actually buy the stock at the smaller price you see, then sell it at the larger and keep the difference as their fee for handling the transaction. You will see this kind of double sale all the time in these sub-penny stocks.