Yeah but if Curtis does go back in time and save Nicky, it messes up everything. It means everyone's without their powers again, or if he goes back further than that then things will alter and won't have happened like they did.
I reckon Curtis is just not going to be able to use his power, because it's all unpredictable and all. Either that or Nicky will just turn up in the next series and we might have to give them some artistic license.
Also the characterisation of the pregnant girl was really weird, did anyone else think so? Just in terms of her implying that she slept around, but seemed really childish, haha. Strange.
Series' like this often get pretty poor by this point, glad (imo) Misfits is still pretty good. Hope Series 3 is just as good...