It does seem to ME that fpsc had some kind of enmity with the aspirants. Firstly, to give them a hard lesson and to show their (fpsc's own) intent after the Faisalabad incident. You can't completely ignore that incident with regards to CE 2013 result.
Secondly, to re-establish credibility of Fpsc. Because its a govt. department and it has to answer about its reputation to the higher authorities. To be able to show what they have done after the Faisalabad incident they had to take some drastic steps.
Add more points if someone has.....