I've seen several shows go down the drain because of senseless fan wars triggered by fans who cannot see the difference between reel and real. In this particular case I don't even think that the fans are to be blamed. As you rightly pointed out some random (I would add idiotic) guy posts some nonsense in his twitter account to gain attention and unnecessarily instigates fans. The said person is either acting like a spurned journo out for revenge (if he is a journo, wonder how he got his job. His english is atrocious) or some nut who wants short cut fame. The timing of such utter nonsense is what is amazing.
As some here pointed out, this week had some of the best epi of the show. Manan chem is scorching our screens and we have had decent Pani interviews offscreen which belie stories that the two are at war with each other. Why would fans be angry with their leads when they are getting whatever they wanted and more? So I am guessing people who are against the show are the ones circulating these stories to disturb the fans and the cast. The last time these useless rumours were circulated, the show had reached the number 1 spot and has remained there since. So as you rightly advised lets not pay heed to this nonsense and let our leads do their jobs to the best of their abilities (which they are anyway doing). Retaliating against the stories is only giving them importance, which is not really warranted.