big orders placed then removed just before prices hit them is common practice trading technique. basically a fake out to fool people into thinking price will turn at those points. helps with stop loss hunting. the faker is looking to get better prices on their order.
ofc could just be someone moving their larger order price cos theyre indecisive ;p
No I'm not talking about playing with the order book. I mean centralized exchanges doing fake transactions with fake bitcoins and dollars to manipulate the market aka similiar what MT GOX was doing.