It could just be contact with someone you're not supposed to be in contact with on a game show, for whatever reason. (I'm sure King Wing is advised as to whom to boot and whom to keep for drama's/ratings' sake.) When I was on "Jeopardy!" there were strict rules IN WRITING prohibiting any sort of contact between contestants and any staff working with us (contest coordinators, makeup person, etc.) with any staff working with anyone who had access to the clues/questions (writers, clue techies, Alex and his makeup/wardrobe people, etc.), so that no one could bestow any info or favors -- or give the appearance of such -- that would tip the scales in anyone's favor. This was all a result of the game show scandals of the 1950s.
The agreement we had to sign as contestants on just a half-hour game show was pages-and-pages huge, so I can only imagine what they have for a circus like "The Bachelor." Therefore, I would think that there are ironclad rules prohibiting contact between staff who work with contestants and staff who work with Flyboy. (I imagine that Chris's contract is especially complicated.) If just talking is a big no-no subject to firing, then touchy-feely kissy-face would certainly warrant the boot.