Okay thanks Alex 
Honestly I think it's open now but I'm not 100% sure - if you go to the enrol thing it lets you get in :S Haven't tried further though.
Spoke to the student centre:
-The guy repeatedly said that technically you are not allowed to do a level 3 without 50 points at level two, even though the system will let you do this
-Arts students that have only done one IDF may be able to get rid of it by request, even though it shows on the study plan. I think this only applies to people that do not have IDFs as a major prereq though (i.e. Linguistics does, Psychology doesn't for me) :S
-People probably already know this, but anyway: you have to enrol for the whole year but you can change sem 2 later on.