The "Kalai" infighting has been there and I am told that historically, whenever the temple management passed hands from people belonging to one "kalai" to the other, all the naamams right from the idol in the sanctum sanctorum, to the auspicious signs depicted at the entrances, even the naamams in the vessels, pooja utensils and temple animals like the elephant, used to be changed.
It is quite possible that like in the case of some other vaishnavite temples, a truce has been reached and the naamams are changed every six months. Knowledgeable members like shri Vaagmi, smt. JR, shri. sarang, etc., may be able to tell.
For non-vaishnavites like myself, the naamam does not matter and we visit the temple just as we will visit a siva temple also.