China approved the Nokia acquisition only on April 8, what would have happened if they didn't? Without an Android strategy, Nokia would be left without any momentum for atleast a year in a fast moving market. Remember how FTC denied AT&T and Tmobile's merger?
The only interesting thing here is that Microsoft didn't immediately kill the X2 and lay off Nokia's Android team. They could do that anytime or sell that division to some other company. There would be a lot of people at MS calling for its head. The headline, story and most of the comments seem to be implying that it's Microsoft that conceived and implemented this idea which is wrong.