Prediction: In 2014 or 2015... Satoshi cashes out all of his bitcoins, making him the world's first trillionaire driving the price of BTCs back to single digits
If he is having one million coins, then BTC should reach $1,000,000 mark for him to become a trillionaire. If you ask me whether it is theoretically possible, then I'd say yes.
But the second part, i.e BTC crashing from $1,000,000 to $5. No chance. Not even a slight chance.