Looking at the order book history through btccharts.com, it looks like that large buy order that was at $30 it's the money that's currently being used to buy up the price and fill in the bids at $60+. As I said yesterday(?), the money on the bids side is getting exhausted now. Probably won't be long before the dramatic and long term correction occurs.
You think? Usually markets trade based on supply and demand. Without a significantly liquid short market, supply is limited. With people sitting on their coins the free float is really limited. There is some short of natural demand (for people going to SR and the other places you can buy and some people hiding) but there are also factors that are temporarily pushing demand up. Think about that.