Some forms would be acceptable, ones of the bone breaking or weapon veriety. But most forms that are taught today would be suicidal because they teach only how to cause pain, not incapacitate an unfeeling, undead creature that has little limitations of strength and endurance.
The older forms that teach decapitation and quick, efficient ways of shattering joints and bones would be helpfull. But even then, I wouldn't recommend it. The more distance between you and those things, the better off you'll be.