Have you been in a partnership -- business or personal -- in which the other party has the upper hand, and the relationship may be hurting you somehow?  You see no way out. You consider blowing it up -- the nuclear option -- but you fear the consequences and do nothing. Many brokers and franchises face that quandary today, as they consider whether to pull their real estate listings from the big portals. Only a handful of brokers have pushed the nuclear button. Recently, the prospect of others joining the protest got louder when the merger of Zillow and Trulia leaked out. As Zillow and Trulia gain more clout with the consumer and with agents, fear has set in and many industry leaders are accelerating their discussions of the alternatives. The Internet has roiled the industry for a...