Spritcha,
I agree that a "politically motivated" argument can be easily made here. Since GB is one of the last to remain in a recession (I know the new data just came out but I don't believe we are really out yet) in the part of the world, this is both concerning and very humiliating for the governing party. GB is supposed to be one of the strongest economies in the EU not the weakest, but we are where we are. Now it's crunch time if the powers at be want to maintain power they must do two things.... first rule is blame someone else... second rule is show quick (even if they are ineffective) measures so the illusion that things are being cleaned up is there.
Whether or not these schemes should be closed is another discussion all together, but the whole idea of retrospecting them so far back and causing so many people to loose everything is what I have an issue with. Again this was not illegal at the time and a group to do this now is very dangerous. Opens up a lot of possibilities of other things being retrospected in the future which might effect everyone.