i was just musing over this the other day (obey terrifying), and i came to the same conclusion. it wouldn't end the action but would apply paralyzed. There are similar things that seem to slip through due to actions taken outside of activations such as Shot in the Rear from Ulix and Eat Your Fill on the Warpig. Shot in the Rear lets a pig make a charge action and if it kills the target make another, and another, and another, . . . Eat Your Fill lets you heal all your wounds but end your activation. The warpig isn't activating so it would heal up and continue rampaging due to Shot in the Rear.
at least thats how ive understood it. Someone more educated may see it differently.