Question: For $500 Who believes the PR mistake was a typo? BZZZZZZT Answer: Who is nobody. Yes that answer is correct for $500.
It's a rhetorical question. I'm not buying it. I believe it was done on purpose.
Here's a thought, what if someone ticked off at Downs inserted the typo on purpose so it would have to be followed up and the conference info put out in a PR?
That would be amusing if it was true. No matter who inserted the "typo" it's all a bunch of hooey, imo.