Very peculiar, I can't reproduce the problem on Tiki 5.2. I took your code and pasted it into a new Wiki page and it worked just fine, no "BE}" anywhere.
I did note on your site the first "BE" doesn't actually have a closing curly brace which I find interesting, but it could be nothing (according to the code you pasted above, it's properly closed).
Have you done any customization of Tiki files? I'm not really sure why it's happening, perhaps someone else has some ideas.