As for phobias, they are irrational, illogical fears. There's a phobia for everything. As silly as a pickle phobia may sound, it's real.
I don't doubt that. But everything you said is why I believe it's just staged. Plus personally, if I was /terrified/ of pickles and mustard, the last thing I'd want is the world to know. And if I was to go on TV, I'd rather go with something more than some hack of a day time TV talk show. :P