Even though the gator appears surprised when he feels the surge of energy from the eel, he keeps chomping down like a chompin' champ.
Or, a counter argument is that the strength of the electrocution is so strong that the mouth is involuntarily biting down and the gator has no choice but to keep going and try and kill his prey.
Apparently this was filmed on the Amazon.
As you can see in the video, the eel does a really great job at zapping his captor.
The gator has taken quite the jolt and appears to be quite stunned. You might think the alligator is dead due to the way he appears to lilt in the water however his leg kicks in the last second of the video suggesting signs of life.
Either way, this is a lesson for alligators everywhere to stay away from electric eels!