I'd have to go with both. Being these first futures, many jumped in. Although, these kind of events could tend to repeat themselves as market is still not big enough and a selected few are still capable of manipulating the market.
This was true before futures and yet it wasn't as scary since those who were manipulating had interest in pumping the price (not saying it was good anyway). Now bankers and financial institutions have access to futures that have a huge payout if bet is won. They'll do whatever it takes to win the bet.