Really not a big deal. CSCO did the same and the stock traded higher after selling off in AH. A $1 selloff is around 7%, which isn't substancial in this market anyway. Should the market gap lower it is a good buy.
Knee jerk reaction. It's only down 7%, actually. Yes, the results are bad but they were anticipated to be that way. CSCO did the same thing. Sold off and then recovered it all the next morning.