BlackBerry acquisition: And then there were...

If she’s going to survive in anything like her current shape, BlackBerry needs to find a corporate buyer. Marriage is the only way out of this mess. Bad news is suitors are dropping like flies. Today, with shares at a 10-year low (and that's saying something), CEO Thorsten Heins out of a job and Fairfax Financial (i.e., Mr. Marriageable Prem Watsa) walking away, we take a look at BlackBerry's best remaining options.