I can't say why they have done it but it's interesting that it's affecting the integrated course too. I got a letter after expressing an interest in the modular course detailing price increases. After having compared to other schools that offer modular, the price of the CPL, IR, and MCC are 47, 58, and 125% higher respectively. Maybe they're really not taking the p**S at all though? Maybe they consider themselves so much the number one provider in the country, that they can charge this amount. Additionally, from what others have said here, it sounds like they're bursting at the seams with sponsored students and Algerians. Maybe they just don't want any more students and this is their way of of ensuring they don't get any...
Best of luck whatever you choose to do though.