Javert falls backwards into the wall, hands still groping for Beck's arms like a sailor reaching for a life raft. His body makes a wet 'whumpf' sound as it collides, although there's no air to push from his lungs, and it doesn't really hurt. There's a vague sensation that he doesn't like that feeling, but it isn't like pain, merely displeasure.

He lunges forward again, faster not because of any better coordination but merely because he falls as much as steps forward at Beck. He grabs for Beck's wrist again, and then makes a move based on some instinct that is new to him, as of today. He tries to bite out the tendon in Beck's arm, at the elbow. Blunt human teeth or not, they'll do a lot of damage applied to this tender area and with the full force of jaw muscles.