"Thanos, use the Space Stone to lock down all the space here!" Tony Stark shouted the warning to Thanos. His mechanical pillars could stop He-El from using Pym Particles to shrink, preventing him from becoming microscopic and thus stopping his near-teleportation-like, elusive movement through the Space Strings. But there was no way to stop He-El from using devices to manipulate space. Tony Stark believed that He-El could still use instruments to travel through space, just not as quickly as when he entered the Space Strings.