I imagine that he will keep moving until he gets asylum or some guarantees from the Chinese government.
Not that I am holding out a lot of hope, but the more signatures the better. It does seem like the best outcome; we need greater transparency, and whistle-blowers help with that substantially.
See also: http://www.schneier.com/blog/archives/2013/06/government_sec...
ridiculous petitions aside, too bad he doesn't have any reason to pardon him - it's his last office anyway and the poor dude already put all his cards on the table.