I dont think anyone will tell the whole world that they are selling off that huge amount of bitcoin. unless there is a plan behind it. Such news will create negative sentiment to the general public and will affect the price. Mt Gox to sell after everyone sell theirs? make no sense to it.

Also 160k bitcoin is huge amount. just imagine anyone here have 1% of it, thats 1600 bitcoin equivalent to appx. 16mil. retirement plan...