I don't know much about this, but I've been reading up quite a bit recently as my cat has epilepsy. I found several things on dogs recently which describes a similar thing to what your dog had and it seems to be just another kind of fit - less severe than the regular fits. If your vet is anything like mine, he'll be happy to give you some advice over the phone and reassure you - give him a ring and check it's nothing more serious.
Have a look at this website too
http://www.canine-epilepsy.com/FAQ.html



