"I'm fine! Just go!"

Because a) this is how it works in movies, and b) this... isn't as bad as he thought it was going to be. The little things are fast, but hey. So is he. It's not a perfect plan, and, eventually, they're going to swarm even more, but for the moment, he's holding his own.

By smashing them with the crate lid, using it like a big shield, before they can munch holes in it.