Jon's Grandfather Escapes His Chains

As the other prisoners continued muttering their words, Jon's grandfather could feel his hands move more easily through the chain cuffs, and after just another minute, his hands were free. He quickly unlocked the rest of his chains, then made a move towards the other prisoners. But then he paused, as he heard the sound of someone walking towards him from the adjacent chamber. He wanted to free the other prisoners, but he also didn't want to get caught. What should he do?