The slight uptick of subs in the middle of Wrath definitely had nothing to do with three new dungeons, or the ICC raid. It was definitely because of lfd. 
People really are obsessed over arguing minutia that has no relevance to Wrath Classic. Make a case for lfd, but these meaningless made up numbers, and biased polls, and opinions of why WoW died serve no purpose other than distract from the actual matter.