I don't know where the author got it from (I would guess, making up imaginary stuff) but commenting on any of yesterday's grain action is a little bit goofy. He/she may not be aware of it but all of the grain traders in Chicago stayed home yesterday. A lot of them stayed home today again too.
As always: Trading in futures and options is very high risk investing. You can lose all or more of the money you invest. Only risk capital should be used.