just chiming in, but buying out the oil market can be tactical ... if you are in the big boy league and just popped someone that will retal, but isn't holding enough oil to make the response, buying out the oil market is buying time ...

and the oil to pm units conversion is becoming well known, so goofing the oil market now may be part of somebody's strategy of deception

and lastly, if someone just wanted to crimp up the bottom feeding orientation of the server, taking the oil away would do it