I love the idea of C, and can't wait to see it in action...
however, while I hate playing devils advocate...
if the NK thing was set directly after Contact, so that CK still has this overwhelming desire to protect Lois through his absence,
then it would be perfectly plausible for him to continue with this line of thought so that he insists on leaving in order to protect Lois and his Child...
but I do personally prefer the other option, where he stays, but just pointing out that it is possible
