Essentially, the Smiler's soul was still in the body as I went in. Later (today) it tried to take back the body. That's where the gibberish came into play. Apparently, a Peckers bite can release souls from a body, meaning if there is more than one in a body, they can free one. I'm not sure how it was me who stayed, maybe I just got lucky. (Also, smilers can talk, the only say smile)