He can feel the strain of it. The pulls where the metal melds into flesh and deeper still, where the supportive housing for the arm bolts onto his ribcage A sharp bolt of panic flashes through the Soldier, prompting an immediate change of tactics.

Instead of pulling backwards to rip himself free Bucky instead hurls himself forwards into Thor, using his legs to brace against the ground and apply greater force. If Thor is surprised by the move it might be enough to break out of the hold so he can roll forwards and free. Then he can bring the metal arm into combat.

The Soldier's focus has narrowed down to the fight, though he can hear Carlos talking he doesn't pay him much heed, not so long as Thor remains a threat.