Wanting to help the proctor but also being given an order to go back conflicted Grav's thinking. On one hand, the proctor could possibly die due to the amount of mutants he heard in the brush, and on the other he could go and get help and possibly save him. 

[i]"Fink Grav fink! you got to make a choice![/i] than it hit Grav, activating his personal vox-caster to the interagrater he sent a message to him, satisfying his need to fallow orders and protect the ally.

"Mutants! Need back up!" as he let loose Daisy and peppered the foliage with ripper fire as he started to move in.