Saying that Appcelerator is extorting their users I'm pretty sure enters into libel territory. Extortion is a crime, and saying that Appcelerator committed a crime is setting you up for a lawsuit.

It could very well have been an accident on the part of the sales person, and saying that the CEO is deceiving people because he doesn't use the same words that you would have used is simply wrong.

If I were you, I would take down the post, or at least change the wording so that you're not saying they are extorting their customers.