No way in hell. MtGox could not absorb hundreds of thousands of coins being taken off the market without going well in to the 10000's/BTC
It was fake money buying real BTC. Most logical explanation.
I've heard that before. Can you explain where the BTC are if the bot actually purchased them with fake money? I've never seen any explanation proving that Gox ever had those actual BTC.
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Here is a scenario: since sometime in 2013, when the demand in China starte to rise, someone at MtGOX bought 800'000 of coins from other customers, mostly 10% above market, with imaginary money. He sent the coins to China, selling them there for yuan. The plan was to get the yuan converted to dollars and deposit the latter at MtGOX, to make good on those purchases. The PBoC decrees however made that impossible (or someone embezzled the money on the way).