Of course. Many miners are selling their harvest now rewards from mining gets lower. However, the users of BLU having their wallet in QT will IMO replace the miners more and more keeping network strength intact.

Besides that, I think a lot of people didn't bother puttinig in a sale order at higher price considering the amount of buy orders at 63 that have been placed since 4 hours ago. Miners selling BLU are just filling those orders I guess, while the buy order at this price keeps growing and growing.

It would take people to sell for nearly 1 BTC in BLU for the price to get below 63, while it would take just over 0.09 btc in buys filling sell orders for the price to be at 85. Need I say more?