I'm not sure if it was bad writing or what, but I just don't see any rationality in the storyline -- it sure seems to me that Morse's character was engaging in actions that would readily earn him a reprimand and replacement on the "Gregory House Investigation" by an investigator who didn't have a personal grudge. It would have been very easy to demonstrate the detective's bias -- Cuddy would surely have done so. House would still be in trouble, perhaps, but there wouldn't have been all the unbelievable personal antipathy. That antipathy added drama, but as such, was nothing more than a cheap writing trick.