It has nothing to do with a pump and dump.

Just look at the MNX/ETH chart AND the liquidity on the order book. You just have to buy like 100 MNX to kick the price all the way up to 0.1 ETH or so.
The most likely scenario is a mistake, someone forgot to buy for 0.025 ETH/MNX, and input an order like 0.2 ETH/MNX.

You can definitely see it on the very low timeframe candlestick, 1 buy order.

This is not a topic, contrry to the debit card which could change the scenery quite a lot.