I have mixed emotions on this.
Did the dog have any prior incidence before?
Not knowing the history and going by
your post, I would consider putting the dog down.
(a couple of bites is one thing till the dog realizes
Hey! this is family vs tearing out the neck.)
I recently fell over Rocky one night when he was sleeping
in the hallway. (dumb dog, likes to sleep
in walk ways.. ) grrrrrr!
He got up FAST but not a peep out of him.
(of course I did not fall on top of him from a roof)

I was told a long time ago, never startle any dog while
they are sleeping.
They might bite not realizing what they are doing.