Explain To Me What Just Happened Here?

[Gumbo]

This doesn't seem right to me so I figure I would throw this out there...

I was watching my brother play and he was using his level 10 Iksar Monk in Cabilis. He was fighting a large Scorpion and had the Scorpion down to 10% health. Suddenly, the Scorpion starts attacking with multiple hits in a row and the attacks turned off his attack.

I don't have the actual logs but he read me the screen and it went something such as:

You miss.
Scorpion hits you for 26 points of damage.
Scorpion stuns you.
Auto-Attack off.
Scorpion hits you for 34 points of damage.
Scorpion hits you for 25 points of damage.
Scorpion hits you for 18 points of damage.
Scorpion hits you for 15 points of damage.
You Die.

I know a large Scorpion is classified as a Warrior and get that berserk attack when they are low on HP but for the Monks attack to turn off when stunned and then to get destroyed by four shots in a row? I know the character is only level 10 but it's more like a WTF just happened moment that I'm talking about...