Although he didn't answer Theodore directly, Theodore could see that Victor and the others were starting to make room for us to get past the giant zombie. Although Theodore himself knew that it would still be difficult for him to ensure Christopher and the others passed safely.
Theodore stopped his steps and turned to look at Christopher and the young man whose name he didn't know. He had to tell them what to do when they passed the giant zombie.
Earlier, Theodore had sensed the zombie's quick reflexes and suspected that it would try to grab them as they passed by.
This time, Theodore wanted to ensure he was there to prevent the giant zombie from grabbing Christopher or the young man. The problem was that Theodore had no idea when the zombie would stretch its arms to catch them.