Looks like the game applies the human fear sprint animation to the orc models - contorting them horribly. Its the same animation that you would see on a human but it doesn't work on orcs.
Fear spells are pretty useless...
Although that vid was funny
I remember first time I ever used that spell was on Raven in a temple - it was quite useful
imho it is very good when NH is trapped and surrounded by too many foes
it is very good when NH is trapped and surrounded by too many foes
Or if you want to steal something in a crowded room. IIRC when you use fear NPCs run and when they return they aren't hostile (this does not include orcs, lizardmen and other kill-on-sight NPCs) and you don't have to pay a fine to lord Andre, Lee etc.