Grimes will spring at the partially revealed ogre with a smirk saying "I'm coming for YOUR arms now, ugly!" He'll swing when within range, trying to block the ogre's avenue of escape if possible.
Grimes spits on the ogre without the arm and says "I told you. You #$^%$&!" Then he smiles at the group and says "Thanks for the assist." He looks at Shae and winks, "Ink? Nice idea."
He'll start to search the ogres and the area around them.