It's definitely plausible that the panhandler would recognize that CK=S. He saw him without his glasses, in his civilian clothing, floating. Yeah ... that's kind of obvious.
Clark's lucky the guy can keep a secret (at least until he tells the priest, who can hopefully keep his mouth shut).
"Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad."
"How do you know I’m mad?" said Alice.
"You must be," said the Cat, "or you wouldn’t have come here.”
- Lewis Carroll, Alice in Wonderland
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